What the TSA screener SHOULD have said
What the TSA screener should have said was AIRLINE RULES ARE NOT MY AREA OF EXPERTISE. We aren't in the business of checking bag size or how many bags you are carrying. I assume that IS something the AIRLINE EMPLOYED OR CONTRACTED ticket reader is suppose to be concerned with.
I generally have no problem with the ladies(generally) that are hired as ticket readers. They do their job in a professional manner and are even curteous to the TSA folk. If I was in their position making less money, i am not sure I would be so curteous.