@Innocenta
I'm not suggesting disability is a blessing, merely that SM, as a PM, should really give more consideration to the language he uses and whether or not his responses are relevant and/or actually add anything to the discussion. In this particular instance he's not only made his point in a particularly clumsy and tone-deaf way, but he was busy putting his foot in his mouth bringing up something that had no relevance to the question he was asked in any case.
In terms of how disability is described - I think that's a matter for the individual. I have no issue with people who do have a disability describing it in any way they see fit, but where I do take exception is when someone with no disability uses clumsy and ill-considered language in an attempt to make some ill-conceived point that does have implications for disabled people. I don't consider my own condition to be either a blessing or a curse, it has it's plus points and a whole load of negatives, but I totally reject the notion that I'm in any way less a desirable member of humanity than someone with no disability because of it. My disability simply 'is'. It's a part of who and what I am, and I wouldn't be rid of it given the option, because then a significant part of who and what I am would go with it and I'd cease to be 'me'. I can understand though why other people, with other conditions, might take a totally different view and wish with every fibre of their being to be rid of their disability, but again, I think it's totally unacceptable to suggest that those people are somehow 'less than' because of their condition. A senior elected official really ought to know better and be held to a higher standard.
"Wheelchair user" is an interesting one. It's had a lot of discussion where I am, and the reason I said 'going the same way' is because that discussion is very much about whether it is a stigmatising term or not, and whether people believe there is something more apt that could or should replace it. Personally, I don't like it, purely because of the semantics of the term, but I've discussed it with plenty of others who, like yourself, prefer it to older and outdated terms and have no particular issue with it. Generally speaking, I'm not keen on any term that centres a diagnosis or a piece of equipment rather than the individual or the person who uses it, but that's just my view and I totally accept others see things differently.