Death is not the only metric that matters.
https://www.bmj.com/content/370/bmj.m2815
Plus, there's common sense. I live in an area hit by COVID hard. About half of the people who I've heard of catching COVID19 through friend networks have some sort of long-term effects. Most are minor, but a few are not. I think the question is what happens a few years out.
I would expect that would leave a trail in literature if it were the case.