People can horribly misuse the phrase "comprised of". Bland articles that directly communicate the language can be more or less tasteful depending upon who is reading them. Almost assuredly sentences can be written without "comprised of" that are also definitely not bland.
But classifying something you find easier to read as better language for everyone doesn't make it immediately true for everyone.
Additionally, it's not about a person making text easier to read or not from one (or multiple peoples') perspectives -- this appears to be about someone going on a stylistic crusade en masse. Objecting to the edits being an act of 'imposing their preference on the world' feels similar to the political mirror-projection kind of argument that can happen.
I think there is interesting discussion to be had (is it better? are there good ways to use it? when/where/how? what is the ethicality of editing articles like this? is a disclaimer wiki entry enough? etc etc), and maybe we can focus on that.