You are tautologically saying that massive shifts resulted from massive changes, but that doesn't contradict the statement about evolution--which is about far more than such "shifts" (not an aspect of nature but rather changes large enough for humans to perceive)--operating over long time periods. Every single instance of offspring is a "shift" from its progenitors.

Also talking about evolution failing to work is a category mistake--evolution is an ongoing process that is the inevitable result of imperfectly replicating biological mechanisms and there's no "succeed" or "fail" about it.