I actually did find Y'shtola's actions quite questionable, and found it weird that nobody in our presence acknowledge the nixie turning into a voidsent. But I am also going to side-eye the ancients and how they treat their creations.

Also, I actually like the ancients, but I do not buy that they were morally superior to us, that their civilization was a paradise for all, OR that their world should be allowed to exist over ours, or that the sundered are more flawed than the ancients were. Yet that doesn't mean I don't secretly hate to love Emet-Selch.