The struggle is the blind opening of chrome, like most people probably just do without thinking. Unless you are really a hardcore frontend developer, you lose nothing by switching to Firefox (or non chrome/chromium browser). I operate both and for 95%, maybe even more, there is no difference. By switching you will put pressure on google to keep on the users good side.

They never made the rendering engine. It’s open source.

I don’t see any more difficulty between being a chromium browser or being a WebKit browser.