Uh, no, there is just the text. A license is a contract, and its terms are spelled out in black and white. There is no hidden subtext or “spirit” that you can hold anyone to.
I’m not saying that the GPL is a bad choice, or that they shouldn’t switch. I actually prefer for software to use the GPL over the MIT license!
But it is wrong to complain when someone sees your license and takes advantage of it. The whole point of a copyleft license is to give people extra advantages for using your software, so calling anyone who relies on those advantages a “bad faith actor” is pretty outrageous. In fact I think it is Asahi Linux who are acting in bad faith now.
The cynical argument is that the spirit of the MIT license was kicking in, but most people would prefer for the spirit of the MIT license to not be like the way it is.
Here I think the Asahi Linux team came to some realization of this variety and made a change. I don't think there's much to argue over here.
They didn't even name the people in the announcement! This is fairly muted when it comes to re-licensing announcements.
Perhaps childish is right, but... hey, they are within their rights to re-license.