The license change isn't a dealbreaker, but Qualcomm still consists of 900000 insectoid lawyers pretending to be humans, and their hivemind thinks "open source" is some kind of disease.
The "best case scenario" was that Arduino would get Qualcomm as a whole to be more open to small devs. The "worst case scenario" was that Qualcomm would get Arduino to be as bad as Qualcomm, and you'd have to "talk to sales" to get an SDK for your development board.
So far, we're not getting the "best case scenario". So keep the pitchforks at hand.
Of course, if you weren't already making that assumption when Qualcomm bought them, I don't know what to tell you ...
There is no such thing as being purchased by a large company while retaining anything non-evil. If anything this is the remaining employees who were lied to their face about remaining whatever they were
Show me a time anyone has ever remained themselves after being purchased by Qualcomm.
It’s over for Arduino.