My biggest gripe with BG3 ...
Well, as we've said it's totally your call whether to play or not and if you feel that it's not your BG that's fine, though your initial question was whether an old time fan of the original games could enjoy the game and the answer to that is yes as many do. But of course whether you will or not is a different question, and if you're already angry at the game without even having played it that's not a good sign.
But I am going to put my moderator hat on here and say that, while I'm sure folk who have played all the games would be happy to talk about similarities and differences between the games and answer your questions, we will need to take the heat down to have a constructive debate Our forum rules request that we don't use excessive language and "pissing on the old fans" qualifies, and seems particularly inflammatory when more than one old fan here has said they've enjoyed the game. You may want to take a cue from your signature

I created my signature around 20 years ago. I changed a lot during that period. I was very chill person when i was 15 or 20, now i am not.
I am just experessing my emotions without calling names, I am trying to express how i feel about this in most peacefull way i can manage. I do not offended or attacked anyone. It is already hard to control my emotions when talking about this subject.
Balduirs 1&2 have a dear place in my heart so cannot be emotionless about it. Sorry that you feel that broke some rules.
When i observe how people behave on twich, youtube and other social media. It is hard to compare level of discussion to what we present here.