Stabilizers have their place. The trouble with them is, that they don't solve the initial problem for new pilots, and that's learning how to find the CG and balance a plane. Or how to properly trim a plane.
Stabilizers that are installed by the pilot can be doomed to failure if they don't know the basics listed above, and/or don't know how to set up the stabilizer in the correct location, and how to set the PIDs/gains.
For the ones that come preinstalled and programmed out of the box, there's still some calibration that needs to be done correctly.
But once you get past that, I really have no issue with a pilot who never learns to fly outside of "assist mode". Not everyone getting into the hobby does it to be a great pilot. Some are just happy to see a plane fly circles, and know that they are at least partly in control of that. If that's where their happiness lies, who am I to tell them they're wrong?