I think the bigger issue is the copyright violation. You can’t just take others code and change the license. That’s not how it works.

Stenzek did not do this. He either got permission to change the license of gpl pieces from their original author, or rewrote them. The edit by Leah in her post fails to acknowledge this, but it should be noted that she states the situation has a lot more nuance, and that she is trying to convince steznek to keep duckstation free software, rather thab threatening legal action against him.

reached out to the bigger community for support.

Like Near/Byuu did? And how did that go?

Although, I do agree, and I would rather have free software. But it’s clear that Duckstation going proprietary is his attempt to boycott the retroarch developers.