This just isn't true and really glosses over the downsides of the US healthcare system.

Employer health plans are only good as long as you pay - if they are good. Lots aren't and they require you to pay so much upfront. Waiting time for specialists and surgeries depend on the area you live in: Not common to wait months for a specialist in the US. You won't get seen if you can't pay for the doctor upfront and medicines are expensive.

I moved from the US (Indiana) to Norway. I've never had an issue seeing a doctor or dentist if I'm sick or in pain since I've been here. I can plan routine things in advance, but I don't need to plan months in advance. I'm just not getting in the same day because they save those times for folks that are sick and need seen sooner. I'll never have a bill if I'm hospitalized. Doctors tend to offer less invasive treatments first - they would have tried to avoid a knee replacement. And if the wait was long (which again, really isn't different from the states, depending on where you are and if you have money enough), the safety net helps out. Reduced work hours and paid time off work and stuff like that. The emergency room sends folks home with medicine instead of expecting you to go to the pharmacy afterwards! ER waiting times aren't longer and honestly, I can call ahead and suffer at home instead of in a waiting room if it isn't actually an emergency, but need urgent care. My partner was seen immediately when he cut off part of his finger, I was seen immediately when I had severe pain, but you'll wait longer for an uncomplicated broken bone and things like that.

And this is all relying on the public system - People can get shorter waiting times if they use the private system.