Isn't the licensing for Qt a very curious and weird quagmire? Maybe it's better these days but I remember about 10 years ago there was a weird divide and unanswered questions about if you could really take a bet on using Qt and not be violating GPL.
No. 10 years ago it was 100% fine. About 25 years ago there was a licensing issue, and the Gnome project talks about it as their reason to exist to this day (which amounts to spreading FUD at this point, IMO).