Does it really matter? I'm a huge, non mistakable guy, and have been told 'thank you ma'am' to my face. You know what I do? I say you're welcome, not launch

Does it really matter? I'm a huge, non mistakable guy, and have been told 'thank you ma'am' to my face. You know what I do? I say you're welcome, not launch an internet campaign against them. In their case it was just force of habit, mind somewhere else, etc. But in the end, it makes zero difference, unless you want it to.