When did Dr Who fandom become so toxic?

It's full of maladjusted sociopaths who want everything to fall in line
with their personal bubbles, and they'll call anything outside of that
"stupid" and even become hyperaggressive towards it.  It's not just the
people who bash the show constantly (but it obviously includes them), it's
also those who claim to like the show but gatekeep their own
interpretations of it.