I put the router away in May and did not take it out again until November. In between I built four small pieces and a lot of shavings.
Hand-cut joinery is not faster. It is not even, frankly, better. But it makes you slow down in a way that the router does not, and slowing down was the point.
I am back on power tools now. I am also a noticeably better woodworker, which is the only review of an experiment that matters.