They're recommending based on the fact that as near to zero percent of users as makes no difference will be disabling the caching that they did.
Normal users will not experience the same wildly varying battery life that CR did in their initial tests.
Those who *do* disable the caching may hit the bug that apple has identified and are fixing. But that number is going to be vanishingly small.
CR was right to update their review before the fix comes out.