Also, I notice someone mentioned TUmblr having a 'block' feature- you CAN block things, but only if people tag them, and they still show up when browsing tags, which you pretty much need to do to find new blogs when you first join. So if people dont care (and a lot dont) about tagging things 'NSFW', then you're still going to see it on your dash, and 100% will always see it in the tags. And many people tag if differently, #NSFW, #N-S-F-W, #notsafeforwork #not safe for work etc etc. It'll be a while before you have enough tagged blocked to not see things, assuming people actually tag them.
And like I said, fandoms are also full of drama. Recently thought of an example- I received anonymous threats because during the WC debate, I said it was wrong to exclude older members of the WC fandom. Basically, I'm 16, and the WC fandom has decided, at least in many parts of tumblr, that people will in the 'fandom' aged 16+ are predators and it's inappropriate to rp/draw warrior art.
Yep. But, i also enjoy some parts of the fandom, so it's 50/50, but for a middleschooler or someone younger it's harsh. (and im not sure if it's still like that, but I remember some aspects of tumblr being sort of nasty towards younger users)