Yes I think there are many people who spread the virus deliberately.There is one thing, that I believe, has not been mentioned here. Those that commit, deliberate acts, intending to harm others. It is a thing. Humans have been known to infect others, deliberately. The HIV history shows us, this to be a fact. In this world, where the crazies seem to be running the show, it has to be a threat and one hard to avoid, if you have a determined attacker.
And there are also unruly people who throw their masks on the ground in the street.