Google is the „owner“ of flutter, why would they fork their own thing? The post is describing the problem the author has with google.
I asked because it is confusing. My assumption would be that if this is an independent organization they couldn't use 'Flutter' because that is a registered trademark of Google, and they would say they are not connected to Google. I'm looking through their website and github repo for any statement that either asserts or denies a connection to Google - and I'm not seeing it.