Just to be clear about this, "Less accurate" and "deliberately degraded" are not the same thing.
Couldn't have said it better myself. If the U.S. Navy were still purposefully injecting truly random errors to degrade accuracy the whole WAAS shenanigan would be completely useless, as you cannot compensate for a truly random error (being truly random, it is absolutely unpredictable, even short-term).
Ciao,
Dg800