I find it interesting that this chap states that his quarrel is not with Q cabin personnel and ground staff, but with management, yet complains that his wheelchair tends to get there damaged.
Having sat on a number of occasions and watched the way that ground staff treat passengers luggage, it would seem to me that damaging his chair and/or forgetting it is the staff on the grounds fault and not management. Or is he talking in a holistic sense that everything that happens is managements fault? Hmmm, interesting concept.