the focus has in general shifted to street level where you'll find Thin-Bloods at
Which moves the focus away from the meat of the setting - the intrigues of the Prince's/Archbishop's court.
I personally disagree, but this is mostly in that my personal experience of politics PnP (of any sort really, Vampire's just worse) is that it most often comes down to self-masturbatory nonsense where most of the players just watch the ST and one player overact smugness. Another thing I suppose is that I feel Vampire has a big problem with age being treated as a completely irrelevant detail (this also tends to apply to how people play Vampire in general, the fact a character might have grown up before electricity isn't even registered as a possibly crucial problem for them; similarly everyone has prepostrous networks of spies who presumably consist of stop signs and lightbulbs).
To me, the meat of the setting has always been in mystery (since just like how politics doesn't make for riveting stuff for an entire group almost ever, so doesn't some hoity toity serious business about vampiric condition). Core V5 doesn't really do much to me in this regard, I mostly just look at the core book as a set of stuff I'd yoink since I have zero loyalty to any system because PnP devs are stupid people who don't understand their own mechanics; I think you should *always* customize and alter the rules based on what you as ST and your players need for enjoyment and narrative purposes. And since I have no loyalty to any "canon" either I just look at stuff to steal and then have my way with because they were neat ideas. This is also kinda helpful approach when it comes to mystery, since it keeps the players on their toes if they know they can't trust the splats (speaking of which, V5 splats anger me, they're basically just wordswordswords jerking off without any crunch) et al and their GM is a goddamn liar who feeds them false leads with a straight face.