I actually fully disagree with his stance.I think it just boils down to ego for him. I think he means well. He just wants to portray superiority, even if he doesn’t have a product.
The reality is yes, it's tricking the factory ECU into creating more boost. The other reality is that the factory "safety" parameters are retained.
With a custom tune, some guy is inputting his own safety parameters and/or adjusting the factory ones. I'd much prefer RAMs parameters to some random tuner.