They're probably the current champions in how to make opting out of tracking cookies maximally inconvenient. Although to their credit they at least seem to remember my choices instead of sneakily reverting back to "accept everything" after a while.
I don't - and it seems millions more people have turned away too, given the precipitous drop in their audience and valuation. It was just in this case I didn't notice the link was to tumblr before I clicked on it.
It's poorly implemented too -- even if you're requesting a blog's RSS feed, Tumblr sends you that Oath screen unless your user-agent is on their list of approved RSS readers.
”If the data subject’s consent is to be given following a request by electronic means, the request must be clear, concise and not unnecessarily disruptive to the use of the service for which it is provided.”