I deal with a lot of this sort of thing daily.
I have come to question if the person in each event it mentally capable to understand criticism or a difference of opnion.
It is easy to see a small framed figure, and realize that they are not capable of assisting in helping in heavy tasks.
It is not so easy to see a lacking mental capasity. But I feel that they are no more to blame for their short commings than the timy person that cant hold up the couch while I vaccume.