If paying more for medical care isn't getting you better medical care, making you being better off, then the problem is elsewhere. Not stagnant income.

Going off what the other poster said, when you don't see a benefit from the system you don't really care about the reason why. When a large portion of society doesn't see a benefit from the system, they're not really gonna care that the economy is "better than ever" and ar going to start engaging in activity that the current economic/social system finds destructive, because they will be trying to replace that system

The ultimate point here is that economic gains aren’t improving things for the average person. The exact reason for that is secondary.