Well if I look at the advanced machines and the Induction Furnace I clearly see some differences. The Induction-Furnace is more then just an advanced version of the electric-furnace. Oh and I'm fine with the solar-arrays, since they don't make them much different. Paying with Transformers for the reduced space is fine.
If the advanced macerator would be more then just a faster version consuming more power the situation would be different. But if you want a faster version of the macerator put overclockers inside. Even with an advanced macerator doing just this, why should I even craft it if the overclockers are so incredible cheap?
There are two scenarios:
1. Overclockers are weaker than advanced machines, no one would use overclockers.
2. Overclockers are stronger than advanced machines, everyone would use overclockers.
The induction-furnace is an overall improvement to the electric furnace and I guess if he would have means to construct a modular system turning e-furnaces into induction-furnaces he might use it, but I guess it's quite hard to achieve, so he goes with two machines. But for just making things faster it seems kind of a waste to use new machines.