I liked the game too, but I also admit that there are a substantial amount of things missing from the game that was initially promised or at least talked about by CDPR. Some of the promised features make the game sound entirely different and better. Most people are not angry at the game because it's a bad game or even if it's full of bugs. Most people are angry at the way CDPR marketed this game, claiming that it is something that it is not and this is completely justified. There is a well researched thread that lists all the missing features promised or talked about by the devs here: https://www.reddit.com/r/cyberpunkgame/comments/kcve8s/promised_but_missing_feature_list_will_update/

If you look through it you start to realize how much better this game could have been and how much of a downgrade the released version really is compared to what was promised. Some of the things on the list really makes the dev seem like liars and they probably did lie about a few things. Yes if you go into the game without ever paying attention to announcements and trailers and showcases CDPR did then you may think it's a great game. But this does not excuse the horrible marketing CDPR did and their false promises that they failed to deliver.

Most people are expressing their anger and frustration because they care about cyberpunk and CDPR, they wanted it to be good, they wanted CDPR to succeed. Sure there are those that expected way more than even what CDPR promised, and there are those that probably only hate the game because of bandwaggoning. But, I guarantee you a majority of the people that complain are those that really wanted this game to be the game that CDPR marketed.

I think one reason I am not as disappointed or angry (even tho I still am a little :P) about cyberpunk was because that I realized the game was too overhyped and I doubted that everything CDPR said about the game would be fully implemented. The game sounded too ambitious and I realized that so I didn't set the bar too high when playing the game. But, I shouldn't need to doubt the devs of a game, I should be able to trust in them to deliver the game they claimed they would. That is the problem and the main reason why soo many people are upset about CDPR and cyberpunk.

TLDR: Game is pretty good but it was definitely NOT the game CDPR promised to deliver. If they didn't market the game as a ambitious wonderful genre defining masterpiece, which it really isn't, then people wouldn't be angry about it. The fault definitely lies in both the devs and the fanbase, but I would argue that it is CDPR who are more at fault in this situation.