There's been a bit of a furore in the emulation community lately centred around the PlayStation 1 emulator DuckStation, which has now seen two license changes recently.
the main dev is talented but has a history of being a diva with a Galt complex. One of the reasons I've stuck with Mednafen aside from the goofy redditor glazing that put me off from trying duckstation in the first place.
Apparently some companies were modifying and packaging Duckstation in commercial products without contributing their changes back into the project which seems to be what ticked him off this time