If you ban someone from reddit or twitter - their opinions only disappear from your echo chamber not from the real world. Maybe echo chambers aren't such a good idea after all.

Those people banned every single dissenting opinion and after a while started to think that their opinions are way more popular than they actually are.

"Everybody around here thinks that JKR is bad - so surely our boycott is going to be successful - I don't see anyone who disagrees."

If anything - this ridiculous hate campaign against JKR could decrease the support for trans people.