I think the rule that you MUST monitor Ch 16 has been around FOREVER. There is NO Way anyone can monitor YOU..for NOT having your radio turned ON.....OR... tuned to CH 16. If your radio IS ON or OFF, no one has the capability to know that.
I don't think anyone here is suggesting that VHF doesn't have a value...It does...but
On The Lake : No One is listening. That's just a fact..in spite of some who have had positive results.

NB
On SALT Water; The chatter on Ch 16 is incessant. It will drive you CRAZY. You will turn it off. Just the way it is. NO BS.