With the call bell, I think your definitely overstating that its an emergency button. I rarely fly commercially except for international flights, I prefer to do the flying myself even if it takes twice as long, but if I want a drink or similar I will use the call button. I don't expect you to come running, but next time your coming down the isle and notice it I can ask you nicely for what I want.
In my experience in aviation anything that is truly an emergency button is typically red and placarded as emergency use only, I see neither on the call buttons.