If you claim that single-payer healthcare could have prevented the scale of the pandemic in the United States, it looks like you don't understand 1. single payer or 2. pandemics. This is ultimately harmful to the cause of single payer or universal healthcare more generally.

NHS is probably one of the most socialized healthcare systems in the world and the UK is doing terribly at their pandemic response, much worse than Germany w/ multi-payer.

It is important to discuss healthcare in the context of the pandemic, but it doesn't make sense to equate the system w/ disease control. We need to provide free testing+treatment & we need UHC. None of that would necessarily change the # of infections or solve hospital capacity

Imagine it like this:
Switzerland has a healthcare system that is like the ACA on steroids: 31k cases
Germany has multi-payer: 194k
UK has single-payer: 311k

It would be ridiculous to claim these numbers entail the following ranking of overall systems: Switzerland > Germany > UK

All of these countries' systems have issues, but all are superior to the US's. Regardless, though, it makes no sense to conflate them w/ pandemic response. And, if you're pro-single payer, this conflation will logically lead to arguing for a German or Swiss system, not a UK one