​

Like all studies this one study is just a single piece of the bigger picture. This study:

only looked at the first 3 weeks after inoculation:

The analyses compared specific health events among all COVID-19 mRNA-vaccinated people during the first 3 weeks after inoculation with health events among similar types of patients during the 3 to 6 weeks after mRNA vaccination.

And only looked for usual suspects:

The researchers examined 23 potential health effects, chosen because they had been included in previous vaccine studies, were of particular concern as an effect of COVID-19, were noted during the COVID-19 clinical trials, or were added after public health officials reported increased cases among vaccinated people. Outcomes tracked included neurological disorders such as encephalitis and myelitis, seizures, and Guillain-Barré syndrome; cardiovascular problems such as acute myocardial infarction, stroke, and pulmonary embolism; and others such as Bell’s palsy, appendicitis, anaphylaxis, and multisystem inflammatory syndrome.

For the conspiratorially minded:

Here is the study:

https://jamanetwork.com/journals/jama/fullarticle/2784015

It's funded by the CDC. The authors affiliations are all listed, and they are all public health related, not industry related. For your covid conspiracy theories to be true basically every scientist working in public health would need to be diabolically evil and good at keeping secrets. All I can say is shame on you for that level of cynicism.