This isn't a peeve, just a confusion.

My church is having services via computer, and I just bought a micrunophone for that purpose. Meanwhile, we've all got used to the use of "un" as the all-round prefix to mean the opposite of an action.

So the screen had an icon of a microphone to show the mic is on. Good, so far. Under the mic is says Mute, meaning turn it off. Later it says Unmute meaning to turn off having the microphone turned off.

Then they drew a slanting red line through all that, apparently meaning Do Not Touch the thing that turns off the turning-off. in which case, why buy a mic?

I had to wait for a non-sacred moment to barge in and ask if people heard me.