Uni-the-Unicorn!
Hero
The point is to have a name for a system of games that use the 5e SRD, but are not WotC D&D. I personally find it useful to talk about a type of game (like OSR) that is based on 5e (and not D&D) and not have to reference every game system under that umbrella.I just generally called games by their name. If publishers want to denote that it's a 5e system, then they will just keep doing that. It's not like D&D is stopping being 5e.