Almost no one says “you’re welcome” when thanked these days. The exceedingly rude-sounding “no problem”, or — much worse — “no worries”, is the usual response (if ANY) to the simple “thank you”. “No problem” is tossed back with utter lack of care or notice – appropriately enough, since it indicates brain-death like a flatline. If you know enough to respond to thanks offered you for a task or deed, you should know enough to say “you’re welcome”.
Whenever a shop assistant (aka “team-member”, “associate” — of what or whom?, I ask myself) answers my thanks with “no problem”, I reply “I should HOPE there’s no problem; it’s your JOB” upon deaf ears and to a blank stare. But I’ve noticed that when I congratulate (and thank) the utterer of “you’re welcome” for her or his usage of the appropriate response to thanks, I get a pleasant reply. I rest my case.
PS. What, I wonder, will replace thank you, or thanks? Oh, that’s already happened: no thanks!