Yes, use a combination of speed control on the transmission and the brakes.I don’t think anyone is suggesting using gears to *slow down* in place of brakes.
-Its more about using lower gears to *prevent * excessive speeds from developing in the first place...so that you don’t end up super-heating your brake pads.
Super-heated brake pads are usually truckers end up using those sketchy runaway-truck ramps...because they relied to heavily on brakes (instead of lower gears) to prevent excessive speed on descent. Then they have to ride the brakes...and the brakes fail from heat.