No, even the interface is fucking garbage.
Tumblr is shit because it resizes images to be at most 1280 pixels wide and 1920 pixels high. Tumblrs get banned/hidden from search for fucking retarded reasons, and even if they're not, the search API is notorious for still fucking up and completely leaving posts out (e.g. try sorting by recent and popular, and count the number of hits, they'll be different). You can't search for more than one tag at once for a specific Tumblr user. Also tags with dashes in them are broken.
A shit search API and shit moderation can make some relevant content practically impossible to find, unless you somehow magically knew about the source Tumblrs of that content beforehand and checked them frequently (e.g. before those Tumblrs were made unsearchable or the API started fucking up with them). People also get used to posting images directly to Tumblr instead of linking to high-quality versions on external file hosts, so you get stuck with blurry-as-fuck down-scaled bullshit like pic related. There are many other things wrong with Tumblr, e.g. the userbase, but all-in-all it's a shit blogging platform.
I would sooner have them post censored shit on pixiv and link uncensored versions on Imgur or some other host, if only because pixiv has something resembling a working tag search. Not up to any booru's standard mind you, but at least it fucking works.