No.QuarterElasticity in the strap doesn't change the amount of force to flex the boot any more than changing the tightness of the buckles does. The main benefit of the booster strap is that it makes it easier to get the cuff of the boot tighter against the lower leg and decreasing the play before the plastic really starts flexing. A booster strap will be able to get much tighter than any standard velcro strap. Comparing a standard strap to a booster is like splatting onto the ground vs bungee jumping. Same amount of energy to get to zero mph but over drastically different curves.
Ding dong your opinion is wrong.
Let me make this very clear. Your argument is that the ability to cinch the straps down is what makes them so stiff. Booster is not the only brand to use these types of straps, and I would agree a set of straps with no give, but that tightening mechanism would give the stiffest flex.
When a booster strap is wrapped around the tongue (and we're talking about 3 piece boots with tongues), the tongues ability to flex beyond the rate of the boot backing is reliant on the give of the bungee in the booster strap. When a standard power strap is at the same amount of tension, the tongue will only be able to travel at the same rate as the backing.
A standard boot could be different as there is no tongue and the backing moves the same as the location as the buckles, but when you consider top of the tongue into flex, the booster strap makes a bigger difference.
Your bungee jump analogy is pretty shit ngl. It'd more like bungee jumping vs just hanging from the bridge.
I've talked to multiple shop techs about it, and have experienced with boosters and without across a few pairs of boots over the years. Softening boots at the first point of flex slightly doesn't mean they're bad at all. I like them a lot and recommend them.