That's just not true under any possible light you want to look at the issue.

Single payer has proven in pretty much every western country to be massively less expensive than the insurance system in the USA.

I was agreeing with Someone1234 about people not wanting to lose their employer based healthcare.

US voters haven’t had the option for single payer, but they did have options for removing employer sponsored healthcare.

It's less expensive in aggregate, but on an individual level rates will almost certainly go up (even if they're lumped into taxes). Individuals cast votes, so if individuals are negatively impacted, they're going to vote against it.

The only way to dodge that is to subsidize it, whether by reducing the budget elsewhere (cough cough the F-35 program cough cough) or raising taxes (cough cough on the ultra-rich cough cough).

I actually doubt it. Whenever I go back to Italy I can easily buy glasses at full price for the same price I get WITH insurance in the USA. Same story for a lot of other stuff, like dental work etc...

Insurance pushes the price of care up by about 5 to 6 times in my estimation, single payer would fix it.

That's not really relevant. Who pays premiums is separate from how the structure works. USA has various welfare programs for the needy, with wide support. Social Security is one of the largest and most popular items in the Federal budget.

It’s the big reason people don’t want to be dumped on healthcare.gov. Employers can get cheaper premiums due to having healthier pools of employees and the rest of society, and they get to pay with pre tax dollars to boot, which has never made sense.

Social Security DOES NOT come out of the general fund (tax revrnues) so cannot have any effect on the budget (which is the plan of how to spend the general fund). Social Security is paid out of the separate Social Security Fund. The only way it affects the General Fund is via the contracted repayment of borrowed monies (and interest) owed to the SSF which the government seemingly wants to default on.