The best hypothesis is that the vaxes & boosters cause the variants.
Seems to me the best explanation is that natural immunity is far better, and maybe safer, than with the vaccine, although the media keeps the truth from us.
For example, in my hospital we have dozens and dozens of patients with Covid, and some are dying. The vaccinated are not dying.
So, IMO maybe the better approach is to get vaccinated, and don’t worry about getting infected, because you’ll have better immunity, or take the risk and don’t get vaccinated, and figure that you’ll recover if infected.
OTOH, there are some healthy people unvaccinated, who are dying.
When you weigh the cards, it seems like the prudent thing to do, if you are active outside on a daily basis, and around a lot of people is to get the vaccine.