"bad cattitude" has some more comments about the Pfizer COVID vaccine.
https://boriquagato.substack.com/p/did-the-pfizer-vaccine-even-really
This isn't a new problem - points to a 2005 paper about plasmids & DNA delivery.

Basically the tests by Pfizer were done with materials produced with "process 1". The production batches were made with "process 2" and is filled with all sorts of debris that can be harmful to people.