TBH if the thing is getting rewritten every two years because of $new_paradigm, code quality matters less.
It would be nice if, given a task, we could teach people to choose the right approach in code the first time, but given we still have trouble recognizing good developers, the fast-paced churn of rewriting apps is a decent hedge until we figure out how to train the people we want.
We seem to only want developers with this skill, but then force them to rewrite stuff often enough so that no actual long-term gains can be realized from their expertise.
