I've been using FF since forever (first Navigator, then a macos variant called Camino, and after it EOL'd, Firefox; tried quite a few others too, but always returned to FF). Never a problem, except of course with websites that don't test if it works on Firefox.

> shoot the messenger, it won't fix Firefox bugs or help their market share.

Your message doesn't really contribute to it either. If you hate Firefox with a passion and wish that Alphabet dominates the world and turns us all into clicking zombies, keep spreading it. Otherwise, better not.

I couldn't access this website with Firefox.

Firefox is doing the damage to themselves.

You can't access HN with Firefox? This website loads one simple html file, one style sheet with a handful of media queries, three gifs and a small js file, which only seems to do things like voting and hiding. While FF 3.6 won't do the styling properly, even that ancient version should be able to display the contents.