I get really peeved when people claim that idiot Abdel is the canon protagonist of Baldur's Gate 1 and 2.
I'm not exactly bouncing up and down with glee myself but WoTC have the final say and they say Abdel was the bhaalspawn. Hopefully Larian are going to keep doing what they've done in the few bits of Baldur's Gate I/II references in BG3 and kept it very deliberately vague so players can put 'their' bhaalspawn into the background.
Hell, for giggles try imagining Tav's <CHARNAME>; they wished to put somewhere the masses wouldn't know them, and they got their wish; hundreds of years into the future.