well i think this may be a little false (this is just my opinion). but if there is another check valve in the system under the hood closer to the cylinder you not only disrupt flow this will decrease the surface area when there is a spike in the hose(when it hits the ground fully pressurized). in other words it will not be 2,500 psi for 15 feet of #8 hose it will be 2,500 psi for 2 feet when it spikes the entire weight of the car will be on those 2 feet.
It would be OK for the 2 feet of hose to each cylinder, it's still holds the same amount of internal pressure. Regarding hoses, there is no spreading of the load, PSI is pounds per square inch, or pounds for each inch.
You are right (IMO) on the disruption of flow with a second check valve, I never thought about that, ahh, but there are different types of check valves, a flapper valve
might be considered.
The one flaw that may be present and has never been verified, is that the fluid may become more aerated as it is rotated though the system. There is no back and forth movement of the same fluid as when using a single hose. (or two hoses that just move the fluid back and forth.