This is hilarious. An unlicensed (and in this case using frequency in the wrong service, AND without a license) is the same as not existing.
The is no such thing as "Deliberate", "Interference" or "Malicious".....THE USER IS ILLEGAL - THEY DO NOT EXIST TO ME.
I was already using 550. If I decided to use the same PL, well, sorry for them. I did not talk over them, nor did I harass or otherwise talk to them. But they didn't like me testing, and IDing on "their" channel. So they moved on. I don't need 67.0 now, test complete.
Keep going, I love the entertainment. And, try to convince me as a HAM this advocating you are doing is the same on your side of the fence. You would be enraged if an some pizza delivery joint setup shop running simplex on the output of your HAM repeater....and don't try to deny that.
I will share with any licensed GMRS user. I have no obligation to acknowledge an illegal.