Yes, this one bugs me abit. I have noticed the last couple of years that mostly young folks respond to a "Thank You" with "No Problem" or something else but not a "Your Welcome"
Being raised in Deep East Texas - that was considered rude and disrespectful, and kids would be corrected on the spot.
We raised our children to use Thank You and Your Welcome and Yes Sir and Yes Mam.
God Willing, we will be around long enough to help ensure our little baby Granddaughter is taught the same.
Don't like rude behavior in folks...