"It advertises pro features, but its sub-$150 physics guarantee amateur results."
The 'Professional 20 Bar Pressure' system uses a cheap, unregulated pump. This pressure is over twice the ideal 9 bars, which often results in bitter, inconsistent espresso extraction.
This is for someone who wants to make espresso-based milk drinks for the absolute minimum cost and is not pursuing espresso as a hobby. The low price is the primary, and perhaps only, compelling reason to purchase this unit.
Anyone serious about learning to make quality espresso should avoid this. The mismatch between advertised features and low-cost engineering will lead to frustration and inconsistent results. Saving for a machine with proper pressure and thermal regulation is a better investment.