If this is the extent of your “problems” with neighbors, for the sake of sanity, just get the fuck over it!
If they make sounds you find annoying, close the window. If they say stupid Milennial bullshit and don’t remember to thank you for a cheap bottle of Welcome To The Neighborhood Wine, try to remember that you did the same dumb stuff when you were their age and ignored established pleasantries.
We were young and dumb once, too. Give the kids a break.