Dark humour, have seen a whole range of these kinds of stickers for cyclists, pets, children, OAPs, even aliens. So I don't think cyclists are being singled out or targeted.
Had a lot most motorists trying to kill you on your bike? I’m sure those showing a tally find it terribly and hilariously funny. Leave them to there simpleness.
Enjoy your cycling and watch out for the dicks!
"*spoiler alert*
It’s like those ‘my other car is a Porsche’ stickers.
They aren’t true*..
(*unless your other car IS a Porsche) "
Generally those people arw utter pricks lol!