BG2 was one of the most boring RPGs I have ever played so I have never finished it, Bg1 was the only good game in that series until BG3. BG2 was filled with boring quests/characters/places while Bg1 made you feel like you are on a grand adventure with friends.
BG1 is super underrated compared to BG2. I think it is hard to argue that BG2 is a better game. However, "x game is just boring" is aweful game critique, as a community we should be above it. What makes something "boring" often has more to do with our particular state of mind when we engage in it then the merits of the thing itself. Sometimes I find Shakespeare boring, it doesn't mean he wasn't the greatest English writer of all time. I know that because others times, when I am in the right state of mind, Shakespeare is a blast to read. People who only try once to play a game but weren't engaged by it forfeit their ability to judge the game. I mean, they can judge it, but none of the rest of us will take it seriously.
