That's a pet peeve of mine too."to be honest" implies you are not honest some of the time.
Millennials will typically only say you're welcome, sarcastically, when Boomers and Gen Xer's start feeling entitled and forget their manners(like when a door is held for you) and you don't say thank you. Otherwise, they're letting you know that whatever task they performed was truly not an issue or inconvenience and they were happy to do it. You may think millenials are stupid, but don't forget who raised them. That is the millenial argument, anyways.NO PROBLEM burns my ass! Stupid millennials! And I’m with you Jim.