I could bother debating with you extensively, but it appears you have resorted to the Gish gallop. There's already lots of research by credible sources (such health authorities) around the world regarding the efficacy COVID vaccines, vaccines that have been given for a year now.

Why was Pfarma trying to push release of the data from their studies until 75 years from now?

https://www.reuters.com/legal/government/paramount-importance-judge-orders-fda-hasten-release-pfizer-vaccine-docs-2022-01-07/

This isn't "Pfarma's" fault, FDA's department reviewing FOIA requests has its own limits.

How many years of safety data exists for mRNA based vaccine use in humans?

How many years would satisfy you? Here's loooooong analysis regarding 3 massive COVID MRNA vaccine studies.

https://medium.com/microbial-instincts/mrna-vaccine-safety-and-risks-a-one-year-update-from-the-u-s-u-k-and-israel-20402f345dca

In summary:

After nearly a year since mass vaccination began, we now have a better understanding of the mRNA (and DNA) vaccine’s safety profile. Yes, those vaccines have risks. But like any medical intervention, such risks must be weighed against the risks of infection or benefits of vaccination. This risk-benefit assessment may differ substantially in some people, but for the overwhelming majority, vaccines are the more reasonable choice.

a product that doesn’t work

https://nyti.ms/3Gcf4U2

Here's one brilliant example why you are wrong.