To be fair, labelling the settings correctly would've been a good start. People seem to think the game only has postprocess AA, and the AO option messes with that somehow, whereas in reality the AA option controls MSAA and I'm pretty sure the AO option doesn't affect AO at all, only postprocess AA.
If the AA was "on" and "off" as the settings I would assume it's post process, but with options like "2x 4x 8x" I assume it's not post process. Although, to be honest, I don't think the general consumer would know the difference, and just looks for the higher number and/or "ON must be better image quality."
I don't think this is a fault of Nier though. People go and buy a graphics card, get a new game, and just immediately press the graphics preset to "SUPER ULTRA" and expect the game to run perfectly. Some graphics settings are extremely taxing for marginal gains... expecting 4k 8x MSAA to run well on an intensive game is silly, but they don't know any better. Even worse when their GPU overheats, the game crashes or starts showing artifacts, and then they blame the game cause they can't be bothered to make sure their GPU isn't cooking first.
A lot of games nowadays don't include MSAA, or don't include options like these in their very high presets even though they provide better image quality.
Options like these also provide great future proofing, cause even if we may not be able to run something like that now, when the new GTX 20,000 comes out with 10 billion teraflops, we can enjoy that nice image quality at the higher frame rates.