It was fine. I cried a bit. I'm used to finales being a full letdown, so this was actually a pleasant surprise.
spoiler
I wish that there had been more elaboration on the blue AI, its nature, and the impact their merger had on Caine.
I called the "they're 'just' scans and can't leave" realization from the first episode, but also harbored the incorrect theory that Pomni was somehow a manifestation of the blue AI, so you win some, lose some.
It's a bit redundant since the O stands for "Optimization", but it means Search Engine Optimization. Basically structure your stuff so it shows up in more searches (use popular terms in your profile, make posts with key phrases, fill out all the fields).
I'd say all of the ones I've bothered to try work? Some of them have annoyingly low pressure, where I'm almost kissing the spigot, but none have been undrinkable.
Pretty sure that if you have a Dualshock 4 or 5,there should be a way to just use that! Modern controllers should work as generic Bluetooth controllers