And we actually do know the long-term negative effects of the vaccine - there are none.
And even the worst short term effects of the current vaccines compare well to any symptomatic COVID infection.
It's really too bad that the people running Facebook, Google, Twitter, Fox, and the other organizations searching out and marketing to the most gullible people always have to convince them to do things that hurt others. I suppose it's mainly snake oil salesmen who are willing to pay for easily duped consumers, not saints.
There are lots of known bad effects to eating at McDonald's, and lots of unknown ingredients. There are many, many bad effects of feeding lots of antibiotics to farm animals, both that the drugs become useless and they mess up our stomach bacteria. Do people know what is in antibiotics or, for that matter, what lives in their digestive systems? There are lots of known bad long term effects to getting COVID. People insist on doing all these things and, oddly, after being easily tricked once they refuse to change their minds again.
It looks like this particular problem may soon be over. Quebec, at least, is doing pretty well, most people are vaccinated, there will probably be targeted vaccines for the variants in the next few months, and there are a number of treatments for people who feel the need to experience COVID on a virgin immune system. Now if we can just work out social media a bit so that if people are going to ignore science they can at least do it in a positive way... Maybe deny gravity. It may be crazy but at least if it works I'll be able to fly. Fight for the chance to fly like birds instead of die like medieval peasants.