Ferrous Lane's argument is that most bad home coffee is a grinder problem wearing a bean's clothing. Change your beans, your water, your technique — if the grind is producing fines and boulders in the same dose, none of it lands.
So they make one component properly: 83mm flat burrs machined from solid stock, in a body that opens with a hex key. Burrs are consumables and should be replaceable. The sealed housings on cheap conical grinders are not, so when they dull the grinder is replaced rather than repaired — which is a business model, not an engineering decision.
It is an unglamorous thing to sell. The competition photographs better and costs a third as much, and the difference only becomes obvious somewhere around the fourth consecutive dose at the same setting.