I'm not exactly sure why you quoted me, but regarding the second block of text, I think one of the big problems on Tumblr is that the frequent users think it's hip and okay to use the tags for "posting their feels", and that makes things harder to look for in general because nobody tags their posts correctly. And the search only searches tags! (I think?)And then Tumblr will die, and the next big thing will happen. Welcome to the internet, comrade.
I'm baffled myself why they need more categorization to keep people from stumbling upon 'bad things' when it's so hard to find things in general in the first place.