Honestly, part of the reason why I sometimes get snarky and bitchy when criticizing tumblr pseudo-activism is because in the past I have tried being nice and peppy and polite, and it didn’t fucking work. I tried being the cheerful critic with “Hey guys! I agree that it can be hard to keep your cool when someone is being an asshole, but harassing and/or telling people to kill themselves is not ok, because you could really hurt someone” or “Hey, the treatment of the Palestinians is really horrible and racist, and it’s good we’re learning and talking about it, but let’s also not resort to antisemitism!” or "Beethoven probably wasn’t Black, and the historical evidence for that theory is really shaky, but hey, here are some awesome Black composers and musicians that many people don’t know about!"
And in return all I got was the same anon hate, people calling me a cunt, people telling me to kill myself, an anon stalker who periodically tells me they hope I get raped, and 4edgy8u brats screaming at me about how I’m a traitor to The Cause. And I’ve seen the same happen to other people who have tried to criticize things like US-centrism, misogyny, or antisemitism, regardless of whether they are nice or not.
Tumblr can write all the 3000 word screeching toddler tantrums that it wants, but the fact is that you can’t support and enable abusers, scam artists, and bullies, while refusing to criticize them because “omg muh 4channers,” and then scream bloody murder when other people decide that they don’t feel obligated to gently lick your anus while offering criticism.