Lightswitches are like this for me now. Activating the switch still produces an audible and subtly-tactile click, but then some awful software has to think about it for a moment and close a relay, and then a whole power supply in an LED module somewhere has to start up.

It's slower enough, compared to incandescent, to juuuuust make me flinch back and almost hit the switch again, but nope, it worked the first time after all.

I don't have a term for the annoyance of that flinch, but I should.