It's an 'excuse' only in as much as someone who loses the use of their legs uses this as an excuse not to stand up and walk around:
https://www.brainline.org/article/co...c-brain-injury
I believe that I am entitled to ask others why they have said particular things (when I am asked to, I always endeavour to give a response). I accept that people do not have to justify their remarks, but this does severely lessen the legitimacy of their argument.