In my opinion, where this “movement” failed was in the messaging.
“Stop Killing Games” is a great slogan written by a young person without much experience.
No company or government will pass a law that says, “you must indefinitely support every game you ever release”. Now, I understand that this isn’t what the group was calling for, but this is the message that comes across. Because of that, it immediately loses support from anyone in any type of software industry and likely many other industries as we know it isn’t realistic.
I’d expend your tldr just a bit to include.