Of course, but because the law is so protective you won’t need to 99.9% of the time. Canada also isn’t a very litigious place and even if it does get raised it will probably get thrown out quickly. To most doctors it is also a huge stressors to watch someone that they can help die. So overall the balance is well worth trying to help out.

Of course it can only surely be decided in a court. But in this case it would be something like was not actively trying to cause harm.

In Canada all provinces have some form of Good Samaritan law which means that you aren’t responsible other than gross negligence. So any off-duty doctor would be very safe to help out unless they were doing something very stupid.