Exceedingly small. Consider that even if the US has 300,000 deaths from botching the COVID virus response, that it is only 0.095% of our 328,000,000 population. Yes, not even 0.1%. Obviously demographically some people, especially the elderly, will suffer the brunt of the deaths. Like a combat casualty in Afghanistan or Iraq, it sucks to be them or their families, but the reality is most people won't be directly affected by the deaths. Those who become severely sick are a much, much larger group of about 6M. Everyone who gets sick will most certainly know Trump is a fucking moron as will the families of the sick.
In the case of the Qanon idiots, they appear to be a mostly under 30 demographic and, from what I've seen, mostly under 25 year old white males. I strongly doubt there are more than a few thousand of these morons scattered across the Internet. If they had a meeting, they'd be lucky to have a few hundred show up because most are either unemployed or working bottom rung jobs.