Mmm, no? You can be on the dole or maternity leave, be a kid, elderly, disabled and everybody gets exactly the same quality of healthcare (in most countries including dental and glasses)

It means that I with good salary pay a shit ton of money for health insurance to subsidize other people. I don't mind, I still think it's a great system (and I probably still pay less than US people because our system isn't rigged and hospitals don't charge $20 for a single Ibuprofen pill).

AFAIK healthcare isn't tied to employment in Canada or Australia either.

UK is the only country in EU giving dental care as the package. Also you have to either look for work or work at most EU to get medical coverage.