while radio silence may be an operations security issue, this policy is also arguably a public relations fiasco. Consider how much "good will" is worth. Suppose there's a six year old on the sailboat. They go to school and say "my daddy let me talk to a man on a SUBMARINE! That was way cool!"
Uh, yes, there's some value in that and pretending to be deaf or pre-occupied while in plain sight on the surface...Not to much.
Obviously the USN needs to learn from the old USSR and put a Party Representative aka Political Officer aboard each boat, to deal with political issues.
Doesn't cost a lot to wave and say hello. No real down side to it.
If you want a submarine sailor to say hellosailor to a six year old then call the public affairs office at base close to you and arrange a tour of a boat. They give tours every week. You might tag along and meet some of the motivated patriots that man them. You'll be surprised to find that the caricatures of them that some are fond of posting on sailnet only exist in the minds of the posters.
Sure every once in a while one of them screws up. Been that way since Eden (if you believe in that sort of thing) or since we slithered out of the primordial ooze (if you believe in that sort of thing). But these young people who grew up in Iowa and New Jersey and Georgia and So. Central LA don't need political officers. They take an oath they believe in and they work longer hours...harder...and more efficiently...than you can imagine unless you have seen them.
Arrogant? Nah. Busy? Yep. Do they know they work for the public? Yep. Are they good stewards of the resources they are given? Yep.
They do dangerous duty every minute of the day in port and at sea. Give them their due.