It seems pretty straight forward what @DrParasite is saying, but I'll try to reword it. If educated folks are pushing for entry level EMTs to administer it, then how come people view it as dangerous for a paramedic to do a refusal after administering it?
Ok, my answer is, whether or not EMTs were to administer glucagon, and whether or not some people see danger in paramedics agreeing to refusals after administering glucagon, the same procedures in place for refusals of any nature would apply to refusals after glucagon is given. What's so special about executing a refusal post glucagon?