[threeseed]

> Well, enter a new system intended for motor vehicles that requires fluids, frame reinforcements, and cumbersome axle fasteners and professional servicing

None of that is true.

Frame/axle changes also apply to calliper brakes and really any part that attaches to the bike.

You can get cable actuated disc brakes that don't require any professional servicing. But if you do go with say 4 piston hydraulic then you get significantly better braking performance. Which if you're doing bike packing, touring, mountain biking etc is a huge benefit.

Also of all the things in your bike cheapening out on brakes is stupid. It can be the difference between life and death.