Check out this couple who are biking from Alaska to Argentina.
https://theplacesipee.com/
Some posters are making Canada sound like a scary place to be alone without cell service or quick access to services. If you were planning to bike through Honduras, I would question your plan but not Canada. I say go for it and expect to be uncomfortable and scared. That is probably what you are going to remember the most.
As far as camping goes, there shouldn’t be issues. One guy I encountered a couple of times (can’t remember his name but I recall he was Japanese), was biking from Alaska to Argentina set up his tent in the ditch when needed.