What happened to "You're welcome!" as a response to "Thank You"? It's not even included in the canned answers on an apple watch. Have we as a society abandoned it?
"You're welcome" was always taught to me as the proper thing, but sounds slightly stilted. They express the same sentiment, roughly, but "[it was] no problem" is arguably clearer about it. I personally just think it's a slightly "nicer" nuance.
Of course, sometimes maybe it actually was a problem, and then I'd only say it if going out of my way to be nice about it.
So by saying you are welcome to their action, people are actually saying the opposite? That you are not welcome to it at all? You're saying it's ironic?