The alias makes sense to me, and I think makes the tag a little more clear.
I don't think it should implicate the tumblr tag though. Because although tumblr is what most of them are including a partial screencap of (the ask portion), I swear I've seen one or two that were using a comment from FA or DA in order to do the same thing just on a different platform. Like these two which are using FA comments, and this and this from deviantart which are all functionally doing the same type of 'ask blog formula', just with the shopped comment box coming from a different platform. It's almost more of a meme/formula rather than being specific to just one site.
Updated by anonymous