Not really, actually. At least I haven't seen a number of "people who died because they couldn't receive care" - do you have one? It seems possible that once health care systems are overwhelmed, more people die. But how often, if ever in this pandemic, has that point been reached? I don't think that often - there is no good treatment anyway.
"only a sample size of 500"
It's science. 500 can be a lot, or few. It was a sound and thorough study by acknowledged scientists.