People act like all phones are the same these days, but we still see BIG performance differences comparing devices. https://www.youtube.com/watch?v=RO-7TFThQyM
Anytime you see someone do that and make a nonsensical post, it's because they're using a knockoff twitter instance. If they use a hashtag that's a community, it posts there.
You can try explaining it to them, but in my experience it's entirely pointless.
They don't even know they're making these posts. But good luck convincing them that they're even doing it.