Hey, that's a nice question.
Although maybe I did curate some posts without noticing that's only used blurt as the social media but I don't think that blurt counts as a social media as blurt is not a social media site, in my sense.
Blurt is just like another blockchain like Hive.
So my answer to this question is, "No, blurt doesn't count as social media".

Still, I'm mentioning @carrieallen for a clearance.