Gnome betrayed the entire FOSS movement by using Adobe software

Is it worth pointing out that GNOME doesn't always use FOSS for creating branding materials? Sure.

Is it a betrayal of the entire FOSS movement? A loss of "all pride and dignity"? No.

Pointing fingers like this is more a betrayal of FOSS principles than what GNOME has done and makes me embarrassed to consider myself a part of the community. If you're working to support FOSS it is your right to use whatever software enables that goal best.

This feels like a great example of crying wolf. In the future I’ll be much less interested in what this author has to say.

Apple should have a lawsuit against them.

This might be too harsh... Do not think it is betrayal, but it is idiotic and can understand someones frustration with it. On par with FreeBSD developers using MacOS to develop their OS.

I wouldn't call it a betrayal, but it's definitely not what I expected. It's kind of disappointing to read about. You can't be both FOSS and optionally FOSS.