My son's doctor when he told us to get him on a pump and cgm as soon as financially possible.

One of the major reasons for the 20 year difference, again, according to my son's endocrinologist, is because both of those pieces of equipment sound alarms when someone's blood sugar is in a danger zone.  A major concern for diabetics is dropping too low overnight without realizing, and dying.  The pump and cgm both blare extremely loud alarms that will wake most people up from a dead sleep so that they can get the treatment they need.  As a result, people who use both a pump and a cgm together (and to a lesser degree, one or the other) have a significantly reduced risk of dying suddenly from an overnight low.

The CGM in particular has a feature that sounds an alarm on up to 5 wifi capable devices should my son's blood sugar rise too high or too low.  For example, he dropped below 65 during PE today and I called the school so the nurse could have him come down to the office and drink a little juice.  Over the weekend he stayed at a friend's house and they went out to dinner, my son's BG went a little high and I was able to text him and remind him to keep an eye on it (He also has ADHD).