Broadcastify is a great site for Scanner enthusiasts. However they don't allow GMRS repeaters to be monitoried. They allow amatuer radio repeaters and some of these repeater are not professional at all, such as:
K6MWT 147.4350 MHz Los Angeles Renegade Repeater
The "435" repeater is famous for lively discussion on controversial subjects. Located in Southern California on Santiago Peak (5,600 feet), the repeater covers Orange County, Los Angeles, San Diego and the Inland Empire.
Most of the GMRS repeaters are used for emergencies and are very professional.
Zello is being used as a means to talk and listen on a GMRS repeater.
Just curious or is it even a concern?