What you described sounds like a symptom of not having someone in charge leading execution of a consistent vision. And that’s what exactly happened 10 years ag

What you described sounds like a symptom of not having someone in charge leading execution of a consistent vision. And that’s what exactly happened 10 years ago. Mozilla handing Thunderbird over to the Community to manage. So I don’t disagree with your frustration, but am simply saying that the issue is caused by lack of centralized ownership … which Mozilla communicated a decade ago they would no longer own.