The revelations about Joss pretty much ended the organized fandom, at least out here.
I'll still always love the show. Buffy too. I can differentiate between a person and his creations.
I have no idea if the accusations against Whedon have merit, but a whole lot of people have complained about him.
But either way, when a fan of a show stops being a fan because just one of the people behind it turns out to have been a dirtbag, it indicates to me that that "fan" was never really a fan of the show.
And Joss Whedon, for all his faults, is still a great scriptwriter. Firefly's scripts are works of genius. That would still be the case if every single accusation against him turned out to be true.
More importantly, as Drsyn71 says, the show was the work of a cast and crew of hundreds. It's silly for fans to cancel a show because one dude on it is a jerk. EVERY show with hundreds of people working on it has to have at least one complete jerk.
Speaking of the cast and crew, I heard the other day that Shawna Trpcik (costume designer for Firefly, The Mandalorian, and more) died late last year. Very sad. She was only 56.
As for me, I will never stop being a fan of Firefly. I have spent hours and hours rewatching the show, rewatching the movie, reading the comics, and I intend to read the novels at some point. Added to that, playing the boardgame (
Firefly the Game) has produced many "episodes" that were never written for the show, but that I saw happen on the board. Firefly is part of our collective imaginations now, and that makes it mighty.