The dual switch controlling the bathroom lights began requiring some fiddling, which was not to be tolerated. After replacing the switch, I cracked the old one open to see what’s inside…
The failed side of the switch controlled the lights over the sink:

The side for the ceiling vent fan + light got much less use, still worked, and look a bit less blasted.

Not much to choose between the two. It’s been running for nigh onto two decades, so …