No, that's not the real problem with PT's. The real problem is that 9/10 of us are arrogant, dimwitted douchebags who don't pay enough attention to what our clients are actually doing and perve on all the other gym members instead. And we got our certifications off the back of a cereal box.
Personalised exercise programming (and, to a lesser extent, nutrition) is exactly what PT's are supposed to do. Failure to do this is failure as a PT in my books. A PT should know how to train you for strength, size, fat loss, endurance and cardiovascular fitness as a bare minimum. A PT should be able to give general nutritional advice for each goal as a bare minimum. A PT should be able to spot noticeable postural issues and provide programming that doesn't exascerbate the problem as a bare minimum, and ideally should be able to give corrective exercise programming. A PT should know good exercise technique on the main lifts, and understand what generally defines good technique (which is the balance of optimal efficiency and minimal risk), as a bare minimum. A PT who lacks basic comptency in these areas got ripped off when they did their course to become a PT.