What does "keep a strangle hold on the render engine ecology" even meant?
Does "make Firefox compatible with more web site" make chrome stronger?
A thought experiment: if Firefox can use all chrome extension, does this make chrome stronger? I guess yes, right? What makes a website different from extension?
[ I am trying to show the "chrome ecology" argument is ridiculous, not saying we show stop supporting website ]
It's like IE6 was - whatever Google/Chrome wants to do effectively becomes mandatory because nearly everyone is using it.
Firefox has to follow along because of all the web developers who only test things in Chrome and expect all browsers to work exactly like Chrome does. If anything about your browser is different, a website doesn't work, and if you complain the response will be "We don't support Firefox, you should use Chrome or Edge instead."