https://www.nbcnews.com/health/health-news/covid-kidneys-damage-vaccine-protect-study-rcna212667

Makes sense to me, the vaccine kept the viral count lower, which slowed down and reduced the potential damage.  Some of the anti-vax stuff reminds me of the the flat earth movement.

Related:

Will you be able to get a COVID shot this fall?
https://www.futurity.org/covid-vaccine-guidance-eligibility-3282792-2/

short version

QuoteThese changes have significant implications for the fall vaccination campaign, with uncertainty over whether healthy people can still get a vaccine even if it's not recommended for them and whether insurers will keep paying for the shots.