I don't really want to defend Atos too much, as there have been plenty of horror stories about their assessments on here. But with regard to this particular quote, is that not a pertinent question when assessing how fit to work someone is? i.e. whether the hand they lost was their dominant hand.
These are things that are answered in the pre assessment questionnaire. Not really related to your point, but Atos will take anything someone says and twist it to suit their needs.
For example a standard question is "Do you have a mobile Phone" if you answer Yes, they then put in the report to dwp "Keeps in touch regularly with friends by phone and socialises without any problems"
If you've ever seen their reports they are all copy and pasted with a very few differences(hence the stories of people having reports with medical conditions they don't have), the assessments are also carried out by under qualified medical professionals (aka not Doctors) and they do not take the benefit claimants own GP's opinion into account. A regular complaint upon appeal is that an assessment for mental health isn't even carried out by a mental health nurse.
Another common question is "Do you watch TV?" If the answer is yes, they deduce "Can keep concentration levels up and follow programmes without any problems"
They are cunts of the highest order. Its a bloody racket, after seeing their reports I do not how some of them can live with themselves. I'm not even being hyperbolic, their practices are absolutely disgusting.
Until very recently they required claimaints to pay £300 for professional audio equipment for the recording of the assesments, it wasn't until a mental health charity raised this with the attorney general that it was changed (and the attorney generals advice was hidden for a year until a FOI request).
EDIT- And even now the fact you can have them recorded is hidden away on their website and not on any of the literature they send with their appointments for assessments. Judges hate them, Doctors hate them. Its partly why so many tribunals are won by the claimant because they know Atos are a shady front for kicking people off benefits regardless of their needs. I'm all for kicking off work skivving fakers but that isn't whats happening.