From my experience with Canada, and prior to Covid I traveled back and forth quite a bit, I find that there is a huge difference between western (west of Winnipeg) and eastern (east of Winnipeg) Canada. Western Canada is very similar to US from my experience. As for health care, yeah, it's convenient to go to the clinic and get checked out and then leave with no bill. But getting more advanced treatment is not so easy or timely
Have talked to a few Canadians who now live in the US and have family still to the north. You can now enter Canada but it's not easy and once there, travel can be very limited. The majority of the population is to the east so those close to us they struggle with the government. Similar problems that we now have in this country. If you go to Canada, other than a frequent "aye" in the conversation there will be little difference unless you go east.