The cicadas down here don't seem to swarm. They mostly cling to the trees and make their noise using their wings to rub their bodies. Probably renders the wings useless for flying pretty quick.
I don't remember ever hitting one while cycling. Dragon flies will continue to be the largest annoyance I encounter on rides. We have really big dragon flies here and they taste terrible.
We get our next cicada emergence in 2024. It's the sort of sound that leaves one a little awestruck with nature. It builds slowly for days till you realize what is going on.