The data the author used, does not match the week 51 UK data he linked to. There were almost 3x as many vaccinated cases. This changes the data some.
In addition, given he is grouping all age groups together and if you are younger you are less likely to be harmed by Covid and are less likely to be vaccinated (Because of that) and vice versa. This is not a good apples to apples comparison.
In performing the same work but comparing age groups. The vaccine is clearly effective for older folks at > 60 definitely > 70.
“he is grouping all age groups together”
Whether out of ignorance, or a deliberate attempt to mislead, he is using unadjusted data.
Other variables (like age), known to effect outcomes, are excluded from consideration.
The conclusions he presents would never pass peer review because of the obvious lack of control.
Studies that have passed peer review and regulatory approval processes around the world, overwhelmingly prove that vaccines do provide some varying degree of protective effect.