Mode3 and mode 4 are not going to prevent getting help... they just prevent passing the box. You have to use a buddy box instead.
With modern radios you can buddy box just about anything.
With the Polks Tracker III you can buddy box with any brand since it has assignable channel order to go with any of the 3 common orders
JR made a cable to "translate" between JR order and Futaba order.
We don't have to force left handed people to fly right handed.
So go ahead and use whichever mode you want.
I changed from Mode 2 to Mode 3 after appx 30 years of flying due to issues with my right hand. It took me just a few flights to get comfortable with it. I can now safely fly a plane using any of the 4 modes... but I do best with Mode 3.