Leaf blowers are obnoxious under any circumstances (how did we ever survive without them? /s). But are you saying people are running gasoline-powered leaf blowers when the air quality is very unhealthy? That’s pollution for sure, plus it’s unnecessary.
Many communities across the nation have banned this damn things. The noise is an overbearing nuisance to residents working and studying at home; and people should not have to breathe dust particles created by leaf blowers while trying to stave off Covid-19, a deadly respiratory disease.