It's great that you share your opinion but at this point simply repeating your praise for the story and presenting subjective opinions as fact (tadpoles are great, opening is excellent) doesn't feel like contributing much to the discussion of how it relates to the previous games, nor does it meaningfully engage with what others have said, criticized and suggested in this thread.
All this thread is about subjective opinions of players. The discussion is also about good writing or rather to what extend the players subjectively think it is good.
I think JandK has made a number of valid arguments why the flow of logic in BG3 is there and that it is good enough (with some room of improvement, of course).
In addition, there has been all kind of nods towards the original games: special powers and the githiyankis, mindflayers and drows had quite the presence in BG2. Plot wise there is enough ground to call this game Baldur's Gate 3. If you take into account how gaming has changed the last decades, I think this game justifies the title. Personal opinion, of course.