Here's a guy that seems to finally start following some of your worldviews. Starts preaching a bit of your gospel, and your first reaction seems to be.
"You're too slow. You're clearly fake because a true linux and open source user would've sacrificed themselves to a pipeline that did not work for them."
Why can't you just be happy and smug right now that a creator has moved away from corporate and into the open source realm?
Everyone has different thresholds for action. When you're talking about replacing your entire professional toolset, it might make sense that they were resistent.
Why is this question important to you? Are you thinking about doing something with the info, or just pontificating about how you think you're better than others for making choices sooner?