This isn't what Tumblr's like, and it's not what Tumblr was
like even when Tumblr was supposedly like that. Out of everyone in that image, three are cartoons, and the other three are people from various YouTube videos.
The irony of this is that trying to defend the purity of "the community" against some perceived threat- that is, fandom slapfighting
- is far closer to something you might see on Tumblr than anything in that image, as is contrarian criticism of "uwu" softboy culture and complaining about "idealising friendships" and "romanticising mental illness", for that matter.
People who have no idea what they're talking about should avoid making images. I hate how all the brainpower has been bled off chans.