I still can't play New Vegas to this day because of how horrifying the visuals are, and no amount of visual mods can fix how ugly those games are because it's not just about the textures or models but the very structure of the world and how those things mash togheter which is amateurish to an astounding degree.
Em, nope, they totally can. You just need HD textures pack, removing piss filter, some stitches here and there, and game looks okay. Still ugly even for 2010, yes, but, well, remember that it was assembled in 18 months for the price of Cyberpunk2077's week budget for ads. The stories pay it all back.
Made a screen for you from my version:
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