Q is trying to sell stuff so will never intentionally offend a customer. They are never going to suggest a customer is fat... even when trying to flog a diet product or exercise machine. Insults don't sell.
Besides, I don't get the obsession most have these days of judging everyone by their looks - so what is someone looks different to the pack? Sometimes there's a tragedy behind overeating / anorexic appearance etc and those people (living, feeling creatures) don't need the added stress of sniggers or name calling.
You've missed the point of my post. "Fat" and "thin" have been adopted by marketeers as descriptions of unalluring body extremes when in fact they are perfectly ordinary, old and descriptive Anglo-Saxon words for body shapes. Because of market forces, it's now considered rude or judgmental to call someone fat or thin. The point is that language changes and I'm highlighting the way in which market forces are doing this. Language changes aren't dependent on obsession, appearance, tragedy, stress or sniggers, just usage, and in this case we're all being led by marketeers to believe that "fat" and "thin" are rude when elementally, they are not.
OMG. I hope this doesn't lead to another row about poor fat people or poor thin people or those in-between. It's meant to be a thread about language change, so I hope it's not a matter of time before the PC brigade hijack it for their own ends by reading into posts what wasn't put there in the first place.
Stupid of me really to say this and I'm now waiting for the inevitable when someone challenges this. This could go on - and on - and on ....