If you use the version somebody else here mentioned, “move 90% of the way to the destination in 80ms”, does that make more sense? (I think it’s equivalent, just a change of units.)

But can't you then also change the units on the linear animations? "move 40px/s until you reach the destination"

I don't think there's any way to do that in pure CSS (which is what I was comparing to). You can specify transition duration, but not speed.

Ah, I think I considered the article to be a supposed improvement to CSS animations - in which case both exponential smoothing and px/s transitions would be independent improvements.