I have to agree with you to some extent.... Higher frequency is generally a better 'long term' way to go... People do not 'need' to blast a bodypart into absolute submission once a week and generally 2 movements per body part with 2-3 sets each will suffice if you are to increase the the frequency (to train each bodypart twice per week)
However I have to say that I have found success with short bursts of HIT (4-6 weeks) and it is not to be overlooked...
I have another Program in a separate thread that is a twice per week routine, based around a Power/Hypertrophy Split (inspires from reading Layne Norton material).
http://forums.steroid.com/showthread...y#.T2emIRHUPAE