I think that this sort of tagging, on and off, is something that people try to do all the time, and I don't think it's particularly effective for altering memeplex fitness except as part of a broader and otherwise effective strategy to portray memeplex hosts as stupid, insular, and low-status. It works great for signalling that you're a host to an opposing memeplex, though.

Like, consider the widespread practice of referring to Confucianism as a religion. Excluding the term itself it doesn't seem that people reason and think about it as something other than a political ideology or even political disposition.