I know a woman that started losing hair after Covid, took about a year for it to start thickening again.
And personally I feel my breathing hasn’t been the same since having a very mild case of Covid back in Jan. Nothing extreme, but a bit of breath shortness when talking sometimes. I did have mild asthma as a kid but it hasn’t been a problem for decades until now.
So yeah nothing extreme, but its not like I go around asking people if they still have Covid symptoms/problems. There could be more that I don’t know about.
There’s been plenty of studies done though, that should be more than enough evidence. Im not going to pretend to know more than people that actually spend their days working on this stuff.
I guess you can choose to handwave it away and think you know more than everyone else.