@dcssalman
I actually respect your idea, probably coming from experience.
As the experience we get is the idea that, let’s consider arm hair, they have a limited length, after which it stops growing, this hair, before shaving is tapered at the end and thick at the base.
What we see is arm hair not growing, then we shave and we see arm hair growing back all together, all growing from their thicker point which is close to their root.

So we get the idea that us, by shaving we stimulate an otherwise dormant follicle, to get back to its former length, but that before shaving, the follicle started as immature, thus producing the tapered end and once we shave it we force an already mature follicle to prolong its activity.

It would mean that this time the hair, having lost its cut off tapered end, will grow back to the length at which it has been cut (given it was its full length), if not longer, entirely from an already big and mature follicle, which this time will be thick and cyilindric all the way up, and some will argue that the follicle might even grow a bit bigger longer than its original capacity it had before having been cut :).

We might believe that even when the old hair get replaced we have screwed the original info about growth when we shaved.