The article already has an expression of concern from the editors, that's pretty rare and casts doubt on any peer-review this might have received.

Just reading the appendix, the calculation they do for the dangers of dying by COVID or the vaccine are completely insane. They take the raw VAERS numbers (which are not designed for this purpose and represent deaths happening shortly after vaccinations, but not necessarily connected to it). They then multiply this by 100 to account for VAERS allegedly undercounting deaths. They then assume that only 6% of people dying from COVID died from COVID, everone else allegedly only died with COVID.

And then they claim that PCR tests are highly likely to be false positive, so many people that are tested positive don't actually have COVID. This is just a series of completely outlandish claims, you can arrive at any number you want if you add "corrections factors" of two orders of magnitude with no real justification, especially if you start from bad data to begin with.