I dunno man, my sister had Covid in the first wave, and she has lung abnormalities that were not present before (confirmed via Xray, I believe).

They don't appear to be that major, but it's concerning that someone young and healthy (mid 30's fit but with a chronic kidney condition for 10 years) has long-term impacts from it.

I think the real concern around long-Covid stuff is that they may be chronic conditions which will present over the next 5-10 years. I agree that they're unlikely to be acute, given that hospitals haven't been overwhelemed.