That's not a knock, it's a comparison of value. It's like a new mustang with an EcoBoost 2.3l 4 cylinder motor, vs a mustang with a 5.0L....just not in the same performance category, even though the owner of the EcoBoost thinks he's driving a performance car.
I don't think anyone said anything about buying a table cheap to flip it.
The small turbo engines are much better engineered compared to the old big blocks. Tight tolerances, high end materials for lightness, smoothness in the engine and airflow. You don't make high power from smaller displacement by being sloppy or cheap.