It won’t.
Again, this is just me interpreting the drawing, so I could be wrong, but as far as I can see, it’ll only do anything in that very first part of the stroke so it’s purely there to ensure that the pressures on either side of the piston are balanced when the shock is full extended. As soon as the shock is further into the travel the seal will engage and pressurise the air above the piston in the normal way, providing your normal springing. Even when the seal is in line with the port, the difference in the diameters of the seals on the shaft at the left and the body at the right will still make the shock try to extend but as the seal on the body is a bit smaller than the one in the air can it’ll not be extended quite as firmly, which will help the shock to move initially. Immediately after the seal moves past the port you’ll still have some pressure both sides of the piston which will be helping to move the shock and then as it goes deeper into the travel the air above the piston will be compressed, and the air below will expand until it’s not doing anything to help, so the spring rate will ramp up.
So overall, it’s part of a system to tweak the initial break away friction and spring rate progression of the shock.
I’m sure LoCo will correct me if I’m not understanding that right.
As above, the noise might not be that, and I guess if you are getting it deeper into the travel it would suggest it’s nitrogen in the oil and it’s not good.