Normal Covid infection apparently causes cytokine storms as well, so maybe there was no escaping it assuming every individual would eventually either have Covid or get the vaccine.

I hate to even say this, but maybe it's possible that excessive vaccinations increase mental diseases in the elderly?

Why are you asking this? This seems fairly out of left field.

and too few vaccinations increases fatal sickness for the elderly.

Or just a general lack of elderly

As pointed out by the preprint, the same effect is observed in serval other common vaccines (BCG, Measles, etc.)

Trial data for the mRNA vaccines has not yet indicated an elevated risk of experiencing a cytokine storm.

There’s really not much to get excited about here.

If the infection model of Alzheimer's Disease is correct, then it might actually provide a protective effect.

Related to this, vaccinations are correlated with a lower risk of Alzheimer's:

https://www.alz.org/aaic/releases_2020/vaccines-dementia-ris...

not to worry ! Lots of cytokine inhibiting drugs on the market, like anti-tnf drugs and anti-IL biologic drugs. All for the low price of about $5-10k/month. Ask your doctor about ustekinumab/adalimumab/vedolizumab. May cause cancer, demyelination and death.