Correct. If you've been watching the program from the start, those L3/L2 requirements actually do get the makers to change their kits. FX and RT changed their kits to make them easier to go Expert Infantry out of the box, e.g. replacing large black ab plate buttons, splitting the butt/back plate, offering raised bumps on the ears, etc.
That is part of the advantage of an L3 program - armor vendors can see changes that aren't required but optional, and they can take that feedback and improve their kits. In the meantime, regular members can get in with as-is kits.
The 501st base requirements today exceed the EI requirements when I get in, and in fact many of the original L3 requirements are now L2 or even L1 as makers have tweaked their molds over the years.