Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
tl;dr fe fans harassed and possibly (currently no evidence, but knowing the fe fandom it's not implausible) doxxed fans over a poorly structured game mode, and also harassed a writer of the new fe games fresh out of college to the point where she quit her job
I don't think this is the exact one, but it gives you a good rundown of the situation. The person in question is Nami Komoru. As for the whole firing thing, I thought I saw that on twitter, though my memory is shit and I could be wrong