We are not talking about software piracy here. We are talking about breaking the software that the machine came with so to allow it to use filament from anywhere, not just them.

The equivalent would be, lets say you buy a brand new Toyota Corola. And Toyota put a special gas fill port on it so you could ONLY fill the tank at Toyota approved stations. What we are talking about here is modifying the computer in the Corola so it would ignore the custom gas fill connection and allow you to put a standard gas port on it so you could fill it ay any station of your choosing.

Nobody is stealing any software here. They are modifying it so it will not prevent filament being used from non-approved sources (that probably paid a fee to Stratosys to become "approved" I would bet).