Isn't that a collapse in cognitive diversity?

Not to be "gotcha", but out of true curiosity: may I ask if you speak multiple languages fluently?

Different languages afford different ways of thinking and speaking? Just talk to a translator in works of literature or poetry. Some languages are more verb-y or noun-y, and so are more about getting between things than being something. Or have more or less ambiguity due to tonal systems.

And while ambiguity can create miscommunication when misused, it also allows for different minds to hear one thing, but interpret it in ways more personal to them. When used pro-socially (and not manipulatively), this can afford cooperation that might not otherwise be possible. Saying things while leaving some things unsaid, that has utility if our collective project is certain forms of synchrony -- we can sync on some things while the ambiguity allows asynchrony to remain unresolved in less important dimensions, etc

Imho monoculture is toward death, not toward something golden.