This sort of report includes everything that goes wrong with anybody who took the medication. That means it includes "things that would happen anyway". It doesn't attempt to normalize or contextualize that vs the baseline rate. Note that there are not any phrases to the effect of "X% increase of problem Y" anywhere in it. That isn't it's job. Even more researchers will need to look at that, and for most of the issues the data may well just be signal noise.
Instead there are strokes, myocarditis, thrombosis, facial paralysis, etc.; most of them in age group 30-50 that has comparatively small covid risk ( U Oxford numbers: qcovid.org ).
In my understanding these are reports submitted voluntarily by regular people after market release, who saw a connection to the medication. See section 2 point 1, „Methodology“.
Why do you think did Pfizer fight in court against publishing these documents?
And why have they still blacked out the total number of vaccines shipped? (p.6, 3.1.1)