The Facebook poster seems very judgmental and opinionated to me.
Business transaction between Costco and her.
He/she had nothing to do with it, yet their 'sensibilities' were offended and thinks it's their duty to take her picture
and spread it and her business on the world wide web.
I think Costco is big enough to lookout for their own best interests.
Morality Police.
(But it is funny)