Apart from the fact that it isn't finished, some parts of it don't work at all (e.g. some perks do literally nothing - they hadn't been written before the game was rushed out), some parts are a last minute cobbling together of something to patch over the gaps left by the parts removed at the last minute as the game was rushed out before it was finished, some basic gameworld mechanics that devs were managing to implement 20 years ago are missing, it was heavily bugged on release because it was so rushed that what was released wasn't a release version at all and the developers lied to the extent that they are being formally investigated for fraud.
It's the last bit that really annoyed some people. CDPR lied about what they were selling. That shouldn't be considered a trivial detail that it's wrong to mention.
I did two complete playthroughs, spending about 120 hours on the first one and I don't know how many on the second one. I paid £50 for it and have no complaints about that. I've recommended the game numerous times in this thread.
I'm not going to pretend that acknowledging the numerous problems with the game is merely "an overzealous delight in trashing it", let alone the more rabid comments some other people are making against anyone who isn't wholly compliant.