Interesting perspective on the Amano.
As a newcomer to the hobby in the last year, I can say that my experience with the talk about them has been much the opposite. When I began studying, I saw them mentioned constantly as a great method to help control algae. As a result, they were absolutely a key part of my first scape along with some cherry shrimp. The cherry quickly disappeared and I found a few of those on the floor around the aquarium but after 6 months, I have pretty much all the Amano shrimp still going strong. They and a small number of nerite snails do great on the algae and I very rarely add any supplemental food for them.