This is really sad, and something that has always scared me, but I know a lot of crew do. Larger aircraft doors are very heavy and sometimes even a strong guy needs a hand to close them. and the steps or jet way is an ideal 'push off'
I think the USA has the right idea, as most c/c do not close the door or open the dorr themselfs, and only ground staff do it in normal operation. I think this can protect things like this happening, however I also think c/c should handle the door regularly as you need to be used to the weight and method required to open, as each aircraft type is a little different.
I know some people worry about ground staff accessing the door due to slide deployment and so on, however I think nearly all aircraft doors now automatically disarm when opened from outside.
Anyone know why we do not use this system in the UK ?
My heart goes out to the family and friends of this poor person. I wish them all well.