As someone once said to me. Microsoft is not something you like, but is something you have to withstand due to Enterprise use it so much, and have so many users.
But when it comes to the browser, then you have to follow the standard for HTML, and suddenly you can choose something else.
Websites have historically been so godawful about complying with web standards that browsers had no choice but to support grossly non-standard code. Which then became standard. Now the vast majority of the web only works because of browser implementation details. So it's Chromium and Gecko and nothing else ever again.