That said, I got terrible long covid after my first infection. I consider myself to still be getting over it. I've been reinfected about 6 times (apparently this is actually abnormal). The o ly long covid symptom I've fou d to get worse after some of my reinfections is that my breath gets shorter again long term, and I have to go about clawing back my pulomnary capacity again.
Otherwise brainfog and the like seem to mostly not worsen, although I will say that I'm still, 3 years on, trying to get rid of the last vestiges of those symptoms.
Feel like I overshared my personal experience here for some reason, but like I said, article seems highly speculative. So why not share some anecdata while we're at it.