Whatever word we have for "this is [truthfully] [adjective]", they're always going to use the word for "truthful" to give something added punch. Specifically in the sense of suggesting a quality has become so extreme that the metaphor is no longer an exaggeration.
Part of it is we humans just love metaphors come to life. Godzilla "literally" was taller than a skyscraper. Superman "literally" was stronger than a freight train. Tolkien was disappointed enough as a kid in Dunsinane forest "coming to life and walking" (by a bunch of men chopping off branches for camouflage, in MacBeth), that he wanted to do a story where the trees literally walked, without any metaphorical fine print.
This specific change literally has had me pacing back and forth in distress before.
If this is what has you pacing in distress, I'm envious.
Well I’m also getting divorced, for reasons that aren’t entirely unrelated to literal communication.
That doesn't necessarily mean we're moving in the wrong direction. Language evolves to satisfy speakers' criteria, so it will gradually improve median utility. But any change is going to have cost, and confusion could be the price we pay for progress.
Alternately, you can imagine a situation where 1% of the population derives a huge amount of utility from a word, while 99% only get a small benefit from another definition. Improvements to the median in that scenario can have negative consequences in aggregate. Or you can see that this particular usage has been confusing people for a hundred years, and the cost of change may outweigh any potential benefit.
I think the position that natural language will just take care of itself is just a touch hand-wavey. Human interests and linguistic-evolutionary movement are often coaligned, but sometimes diverge- the same as with human interests and economic growth.
Why not? It's done just that for countless millenia. Cavemen without Ph.D.'s in linguistics managed to develop languages for communication just fine.
Now, they could be further optimized, sure. But the default of taking no conscious action at all has historically worked out just fine for linguistic evolution.
It is not my belief that, left to its own devices, natural language will become unusable. It is probably true that we can get away with letting nature run its course. I do object to using this as an argument for avoiding optimization, but I don't think I'm in disagreement with the parent there. Apologies for my error.
This is the underlying source of my distress: the fear that my ability to understand and be understood by people will remain as it is.