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.
No, but you're willingly eating the crap sandwich when I made my case clear as day that just because WoTC says something is canon doesn't always mean they are always 100% accurate. If you've seen how "Siege of Dragonspear" ends, you'd know there's no way that happened to Abdel, his reputation needs to be clean so he can get elected Grand Duke 100 years later.
And there is plenty of wiggle room for player's to put their Bhaalspawn protagonist into the lore alongside Abdel. If you looked at my previous post, I hinted that Gorion likely raised three Bhaalspawn in Candlekeep instead of two. Abdel being the oldest would leave Candlekeep years before BG1, leaving "our" Bhaalspawn and Imoen the only two for Gorion to look after left.