If you poll a hundred thousand people who are familiar with BG3, I'm confident the vast majority of them would understand that BG3 is a big part of the Forgotten Realms setting now. That's how successful the game was.
However, there are always some folks who aren't capable of understanding for one reason or another. It doesn't bother me that you don't get it. I don't expect you to agree. I certainly don't expect you to understand things outside of your processing ability.
So an imaginary poll and your confidence constitutes evidence? What is it I am incapable of understanding? What is it that I don't get? What you don't seem to get is that repeatedly saying something one wants to be true does not make it true.
The only question is which direction will be canon. Did Astarion ascend or not? Those are the type of things up for discussion when it comes to canon.
If we were discussing a book then the question of whether Asterion ascended or not would not be up for discussion as regardless of however many people read the book, what happened to Asterion is the same in every copy of the book. With the game there are people who never took Asterion along; people who only had Asterion for the earlier part of the game; people who didn't have Astarion ascend; and people who did have Astarion ascend. Then there are all the other things Astarion can do or not do in the game such as romances etc.
Similar arguments can be made regarding characters such as Minthara, Wyll, Shadowheart or even relatively minor characters such as Auntie Ethel.
Nothing would ever become canon because the discussion as you call it would be interminable.
How much of Jaheira in BG3 is canon? I seem to recall discussions on this forum about that.
