Perhaps I might be uniquely qualified (just for once) to comment on this subject.
I have been flying actively for almost 50 years and, due to a horrendous accident whilst playing with friends some five years ago, my 17 year old son is seriously disabled.
He is fully cogniscant of the fact when we go on holiday that, in the event of an evacuation, we are going to be sucking the hind tit.
Ladies and gentlemen, that is a fact of life. When evacuating a blazing aircraft there is no such thing as political correctness. If my son and I blocked a slide even for 30 seconds then hundreds could die and that would be an awful result.
As I have said to many of you out there who know me, I don't mind dying but I would sure as hell hate to lose my licence.
When I am in the back of your aircraft with my son I am in absolutely no doubt that we sit tight until everyone else gets out and then we shall take our chance.