Does anybody with a wide knowledge of photography trust Ken, or do they believe more than 5% of what Ken writes? Other highly regarded reviewers are not reporting an exposure problem. Put another way on a scale of 1 to 10 for reliability, with one being low, Ken often struggles to reach 1. If you want consistent accurate advice - my advice is forget Ken.
Photography is a bit like archery. A technically better camera, lens or arrow may not hit the target as often as it could if the photographer or archer does not practice enough.