Yes, dynamic proportioning has been around quite some time now, starting in the early 2000’s. It replaced metering and proportioning valves, but with the ability to vary front and rear bias based on conditions like brake pressure, speed, inferred brake temperature, etc.See if @FordTechOne can confirm but pretty sure the truck has active proportioning front to rear. Not uncommon on modern ABS systems. Hell my BMW motorcycle had it. I don't believe it's just a set mechanical ratio. I suspect he will state that it was not designed to work with aftermarket kits. However, if the system is monitoring wheel speed... based on my experiences and others, I feel safe for myself and my uses. Also, in this thread or another I pointed out Alcon sells a more aggressive rear pad to fit the OE calipers/rotors. If you don't know, they are no small potatoes in the braking global market and have a significant financial obligation to protect.
Weight transfer dictates that the front brakes will always handle more load than the rear. Dynamic proportioning compensates for wear and the front to rear braking force ratio, but the front will always be responsible for the majority of the braking force.