As I mentioned in the vaccine passports thread, I have several friends (young, healthy, mainly white Caucasian adults) who had COVID last year (mostly around autumn/winter) who are still suffering. Even in "mild" cases - still can't smell or taste properly, permanent brain fog - for someone previously healthy in their early thirties that's really fucking shit. Even if the worst effect is that you'll never enjoy food again in the same way that you did before, yes it's not the same as being on a ventilator but it's still not something I'd wish on anyone.
And I've got another friend who had it in March 2020 and basically has barely left his bed since. 31 years old. I don't know your friend or her circumstances but to perpetuate the insinuation that long COVID doesn't exist is pretty fucking insulting to the many who are living with it.