There are too many unknowns, specifically the theory that due to how it reacts it can leave blood clots that you will never know about.
Granted, anyone can have a blood clot at any time for no obvious reason, but its enough to keep me nervous. Particularly as the last time I got gastroenteritis I nearly died (I had a fit, stopped breathing, swallowed my tongue and was paralysed from the waist down for hours) and its the SECOND time I had a fit and nearly died due to a reaction to illness. Both times its only because I live with my mum that I'm still here and A & E was a trauma in itself, and that without COVID-19 levels of understaffing.
I already get random bouts of fatigue as it is, that's bad enough, but I also remember what it felt like on anti-nausea meds as they sapped so much energy I felt like I was dying. Really don't wish that again either.
So yeah, I have good reasons to be paranoid. I plan to at least live long enough for the RTX 3080 GPUs to come into stock.