I think a lot of the hostility comes from the (justified) feeling of helplessness, or being ignored, when you find yourself in the minority. Fans have been yelling on the internet for years, to no avail.
Yeah, those 1701-D fans really screwed the franchise, didn't they?
When TNG premiered in 1987, some TOS fans were in the minority, and they yelled. When Star Wars premiered in 1977, some TOS fans were offended and they yelled. When Enterprise made it's debut, fans were upset too.
It happens. It happens with comics too - and other film and movie franchises too. This isn't anything new.