I'm not saying there is a safety risk, but i'm saying this is becoming a recurring theme and if it is happening often then it should be informed at the time of booking the ticket that there is a strong chance of a delay due to the type of aircraft being operated. then yes, people would start to take affirmative action and maybe not book that ticket !!
I notice again the flight has stopped in Bangor, Maine today. At least they got as far as the US this time even if not quite to Chicago. So that's 3 times stopping in roughly 13 flights (was it cancelled on 2nd March?)