Edit: You realize the Corona protests are organized by a group that calls themselves "Querdenker", so the "Q" may just refer to "Querdenker"? You just provided me with another indication that the alleged wide reach of QAnon is the actual conspiracy theory.

Even assuming that is true (I haven't noticed, but I didn't specifically look for it), it doesn't prove they are "widespread", as only few people go to Corona protests. They are a special part of the population. I don't think people happen upon QAnon stuff and become radicalized that way, as the social media alarmists claim.