If people use the term meme to mean more than macros, then the definition changes. Language reflects the way people communicate. So if a bunch of people use language a certain, unorthodox way, they are not wrong.

Sometimes people will call a particular strategy a “meme” when they just mean it’s bad.

I think you misunderstand what those people are saying. They probably call it a “meme”, because players imitate some weird behavior, they saw in a video or on Discord something without thinking through the strategy. IMHO, “meme” is a way better description of that phenomenon than “bad strategy”, because it includes why people are deploying that strategy.

Give people a bit more credit, will you?