# senior member of various RAF Flight Safety committees
# active pilot
# spent more hours in the air in the front and the back than you can shake a big stick at
Yawn. Pardon me, but so what? None of the above makes you qualified to assess this particular flight attendant.
Unless you've got access to her EP records, were an instructor on her last EP session, or saw her performance in an actual evacuation, all you're able to do is give us an unqualified opinion.
and finally.....
# perfectly good eyesight that can easily recognise a grossly overweight person that would have extreme difficulty in getting through an overwing escape hatch let alone getting down the aisle without undue difficulty.
Did you even see her walk down an aircraft aisle? Not according to your opening post!
If you are a "Senior member of various RAF Flight Safety committees", then I hope to god that you apply better reasoning and judgement skills on those committees than you're displaying here on this thread.