The article said that spike proteins are causing the microvascular disease.
Spike proteins are created by the vaccine and by Covid (as you initially, accurately pointed out).
Unless you are claiming that getting the vaccine prevents you from catching Covid OR that getting the vaccine decreases your spike protein exposure during a subsequent Covid infection to such a degree that the spike proteins created from 4 shots + the reduced spike proteins from Covid are less than the exposure from an unvaccinated Covid infection.... than you agree that getting the vaccine exposes you to MORE spike protein and thus you are more likely to get the microvascular disease mentioned in this article.
I don't know but given that the vaccines obviously have a big impact on the severity of the disease it's plausible that they decrease the spike protein load.
Again, I'm not the one making the claim - the author is - and the article doesn't back up the claim in the headline.