Consider that you failing to see these things is a "you" thing, not a "people are doing it wrong" thing.

Emojis are part of today's written culture because they're so trivially included alongside things being written today. You are fighting a battle that has long ended: they're a feature of communication now. Just like older ASCII emojis, and various other even older nonstandard-standards of comms.

And replying with an exclamation mark, something I've done myself many times, is incredibly ambiguous and not the best example you could come up with here :)

Also, you're kinda talking past each other here in terms of emojis in a message vs emojis as reaction.