It absolutely does, though. Vanilla crashes all the time and has several game-breaking bugs. I don’t recommend that anyone plays New Vegas unmodded – especially on a newer machine that’ll be less compatible (like my 7700X + 4090 rig running Windows 11) – unless you just hate yourself. You need community patches to get it in a playable state.
Same goes for Fallout 3. It’s not nearly as buggy as NV, of course, but try running it Vanilla on a modern Windows 11 machine and let me know how well that goes for you lol. You get massive framerate dips and it literally crashes every 5 minutes on a brand new PC if you don’t install any mods to make it compatible.