Don't get me wrong, I'm enraged at the lunacy of some. But I don't think we're going to be better off in aggregate by insisting on payback.
On the contrary, spite definitely has a useful purpose in social structures. It strengthens the negative effect of unwanted behaviour.
That's not the only utility for this.
Understanding the networks of information flows over social media will allow for easier reintroduction of accurate concepts, using similar looking quacks and new language for people who prefer to believe quacks over any reputable institution.
It can also be useful to get people to realize how consistently they are led on, as many of them forgot their prior theories and are just subscribed to random causes alongside their vegan, spiritual or political journey.
I have for years had a big list of people, companies, and other organizations I wish to actively avoid. The pandemic just gave me higher resolution on the "undefined" set of humans and organizations.
I already avoid racists, extreme partisans, assholes, anti-science types, people who are mean to waitstaff, people who don't read books, et c. Covid gave me a few more categories.
Perhaps there are false positives; I am willing to take that risk for the immense benefits so far.
"it doesn't exist"
"its just the flu"
"nothing you can do to stop it anyways"
"5G over the air microchips"
"dna-rewriting vaccines"
ideas fell apart and were just led to other wacky ideas.
Make a list now, so that you remember who the idiots are after everyone is vaccinated.
I've already had to re-plan my reintroduction to retail after finding out a few of my preferred shops weren't obeying mask mandates, or in one case actively flouting them.
It will be easy to forget and put it all behind us. Don't. We're lucky to receive such useful side-channel data.