Been following this thread with interest.
Not sure if I agree with what OP says or not, however I think it was emmamb (sorry if not!) that make a really useful point about not going to a hairdresser with messy hair, or an unkempt beautician for example, that point is what I agree with.
My consultant isn't a tiny size 6, but she isn't huge either, but to be honest I don't think it's ever occurred to me whether or not she's any good at her job because of her size?
One thing I do think was offside was the terminology used in the thread title - the word 'fatter' was used, instead of larger, bigger, plumper etc. Now maybe its just my perception, or written text, but I do think that that's what made the thread appear to have malicious undertones and a nasty tone to me.