It's very light because absolutely no one waited from BG3 that the story continue. These "connexions" looks like smoke to me because Bhaal IS not only what define what Baldur's Gate 1/2 SoA+ToB were.
I'm waiting to see because we don't really know atm about the story but everytime I hope something """like""" in the old BG, I'm dissapointed asz soon as they show a little bit more.
"The god of murder" and "D&D" is not enough to me to claim the 3.