While physical damage due to the dangerous spike protein is a possible reason, this is the most likely explanation.
In order for him to finally give into the social pressure and get the jab, he had to suffer a psychotic break, which reordered his mind so that it integrates a delusional belief. That psychosis will change the way that he reacts to many things in his life.
If you haven't already seen this, it's very important to understand the mass psychosis which is deluding much of society right now: https://www.youtube.com/watch?v=09maaUaRT4M
Capillary clotting is a known effect caused by the spike protein. One of the doctors who ran D-dimer tests within the limited window of taking the vaccine found clotting in 60% of his patients. That can result in brain damage and organ failure, depending on where the spikes end up.
I don't expect most people to be able to entertain the idea, so I'm not surprised by this rebuttal. You have every right to blindly "trust the science", as most people do. Even I have spent the last year and a half dismissing anyone who said things like "there is no virus" as crazy conspiracy theorists without a second thought, even though I am far less biased towards the establishment than most people.
I would have continued to do so, had I not actually studied the processes used by Virologists, and even after understanding just how incredibly flawed the "science" is, it was still hard for me to come to terms with the situation.
Yeah, it sounded bizarre to me too at first, since this is what we have all been led to believe. They have in fact fooled us all. I thought the people who said "there is no virus" were actually crazy conspiracy theorists for the past year and a half...
But now that I've studied the "scientific" methods that are used by Virologists, it's painfully obviously that there's nothing close to what could be considered scientific involved in their processes.
Firstly, Virology redefined the meaning of "isolation". No virus has ever actually been isolated in a lab. What they call "isolation", is in fact fabrication of dead/damaged/foreign organic matter, which they then record interesting looking parts of under an electron microscope, without ever isolating anything at all. Various virologists have proven this, including even the one who invented this method of "isolation", by recreating identical images using uncontaminated control samples which never contained any virus.
Secondly, Virology redefined what it means to sequence a gnome. They have never actually fully sequenced any virus, which should be obvious at this point, since they wouldn't be able to do that without first isolating a virus. Instead, what they do is take a very short sequence from random particles, and then use mental/computational algorithms to fabricate the rest of the sequence. That's why they have never been able to recreate the same sequence independently, or from any other sample, without using a template created from the initial sequence they fabricated.
While there may very well be something to this, it could also just be part of the left's disinformation campaign to distract us with bullshit and make us look like quacks.
The vaccines are likely ticking timebombs though, regardless of whether graphene oxide is involved or not.
I read it on Voat a couple years ago, but even though it was brilliant, it still seemed too far fetched at the time for me to get fully invested into.
This fake pandemic forced me to research and understand Virology "science" and opened my eyes to many fundamental things which everyone has been lied to about. That also fits perfectly with the parasite theory, and together form a complete picture which is supported by far more scientifically valid evidence, making it much more compelling than what everyone has been led to believe about "viruses".