> Do you think countries with even the most coveted universal healthcare just approve everything blindly?

Yes. Everything that they are trained and able to do here, is covered by the national insurance, at least where I live.

We never even have to explicitly ask them to approve anything, it's all automatic. You don't see the bill.

You might have to pay the difference for "nonessential upgrades", like a plastic cast instead of a normal one when you break your arm. Had to pay 5.00 EUR for that and it was the only time I had to pay out of pocket in my entire life.