Except for Switzerland, Western (not to speak about Eastern) Europe's universal healthcare means universal high taxes, universal low quality of treatment and universal access to waiting queues.
You don't have to look further than Canada to know that isn't true. My taxes are not significantly different from yours and I don't have to pay for insanely high medical insurance on top of that. Quality of treatment is fine and wait times aren't significantly different (but vary according to need).
I don't know how anyone can with a straight face argue that the US healthcare system is efficient with regards to money, time, or outcome compared to most single payer systems.
Waiting times are public information in England. You can verify what they are for most things.
Currently wait times are too long. This is because i) Social care has been chronically underfunded for many years ii) The NHS has been chronically underfunded for many years.
Here's the wait times for IAPT (short form talking therapy for mild to moderate mental health problems -- usually CBT).
I don't know how anyone can with a straight face argue that the US healthcare system is efficient with regards to money, time, or outcome compared to most single payer systems.