Anecdata, but I recently went to wifi6 and even though I didn't notice until now, I'm pretty sure our wifi lights respond quicker than they used to. It's maybe only a second or 2, but I remember being annoyed at how long they took sometimes before, and I haven't felt that way since I got this new router.

However, the old router was a Google mesh and 1 of them definitely died slowly, so that could have been causing the delay for a while before it fully died on us.