I can tell you that´s not how the original, and most of the automotive products I know, function.
The power to open is set by the pressure of the gas and the dampening is done by the oil (sometimes also pneumatic).(the oil is also a sealant)
Adjust the viscosity of the oil or the valve diameter and you adjust the dampening. Accordingly to the pressure.
you can even dynamically adjust the force that will slow down the door. some do this by a groove with changing width or depth. This is also done in the original struts. after 70mm of the 110mm range the door slows down.
BTW: One of the problems with the original struts is, that they are horizontally installed.
I had one of the originals testet (2 yeras old) the had only 95% left of the 690N they were rated for.
Because the oil can´t do the job as a sealant the strut looses the gas pressure much faster than normally.