Maybe none of these are as bad as the vampires but NV is rife with unlikely craziness and over-the-top factions which is more in tune with Fallout 2 than Fallout 1 and at least personally chafes me quite a bit.
This. Fallout 1 wasn't a great game because it had great RPG mechanics - its mechanics were rather crappy, especially when compared to some stuff that came before it (like Darklands or QfG series). However, it was a game with the superb atmosphere, stemming from incredible visuals (not in terms of graphical complexity, but artistic vision), great audio part, excellent sense of style and decent writing. All that, combined, really created the illusion of vast and diverse world with lots to explore (when in reality F1 is rather short and not that varied, with all that "alternative solutions" schtick being vastly overhyped).
And all that isn't present in neither F2 (it kept the visuals, but got fucked in the style department, and, of course, the storyline retardation began there) and, obviously, F3 and New Vegas. New Vegas is buttfuck ugly (because of its engine, most of all) and, just as F2, its whole world is built around the idea of putting as much dumbfuck lulz in the game as possible. Sure, F1 also wasn't a 100% serious game, but the world wasn't built around jokes and it got serious where it needed to be. Like the Cathedral, with all those sly cultists, demented experiment victims and Master mindfucking you. Or, y'know, one of my brightest memories of F1 - cultists blowing themselves up at the Military Base after the death of Lieutenant. Compare to Enclave, for example, where the main thing going on is president Dick putting his dick into a secretary. Oh, how fucking clever.
It's amusing to see people who can't let go of their fallout 1 illusion trying to claw their way into arguments of NV being a shitty game objectively by attacking only subjective aspects of the game and bitching about retarded shit.
Engine was fucking fine for its timeframe though they had to limit are-size because of console restrictions. If you're unhappy with the engine there are literally a metrict shitton of mods that bring the engine pretty fucking close to up-do-date graphics with texture, effects, etc.
And stylistically NV is superior to pretty much anything i've played in a very long time in its genre, this whole talk about "artistic vision" is the biggest load of horseshit i've read.
From the abandoned houses + farms in goodsprings to novac to the strip, sunsparilla hq and even legion HQ everything has a specific, well-defined art direction and while you may not like the texan/las-vegas flavor or whatever other elements they used it does not make the game stylistically bad, even though it doesn't try to emulate perfectly your autistic version of how first-person (or isometric) Fallout 1 would be (without copying too much of course because then there would be endless whining about lack of originality if they somehow used the same locations only in fp or some shit).
Fallout 1 was a gem sylistically especially for its time and given how little resources Cain&co had but that was back then, times have changed and there are plenty of graphics-related devs that are actually good and make really good looking games (beyond going strictly with tech/engine things).
And this whole "omg it's too lulzy for me" is also retarded as fuck, unless the ONLY thing in NV you played is OWB (which does fit in that category imo).
Like the cathedral with the cultists, victims etc you have a lot to be interested in in NV - from listening to Caesar about how he created the legion and his mentality on leading and conquering to how House created the strip or how NCR is falling apart due to bad leadership there's substance around every main "protagonist" of the story.
You can argue that NV doesn't have as many overly-dark influences to it but the whole variety of conflicts that revolve around who gets the dam etc aren't any more lulzy than the themes in F1.
Also people comparing Bloodlines to NV in terms of immersion/atmosphere w/e are also being dumb as fuck, Vtm is not a fucking open world, the only quest that you actually have freedom of finishing/exploring is the one with the cult, literally EVERYTHING else is as straight-forward and stream-lined as possible, you only interact with your points of interest, the action ONLY takes place at night, the world is MOSTLY conveniently filled with supernaturals, ghouls and blood-dolls while NV is actually trying to create an open-world that tries to emulate a post-apocalyptic alternative history, not a goth forever-nightime world-of-darkness mini-world.
I'd love to see a vtm of the scope NV had but Bloodlines had so little funding it literally had to cut corners constantly to achieve what it did (and it did so beautifully for the most part) but it's the main reason you can't compare it to NV because if you actually did you'd be constantly complaining about said cut corners instead of ignoring them.
I also took immense enjoyment in playing both games and as such don't have a huge hardon for trying to compare them, especially for aforementioned reason.