Hi Wayne
I think Cathe's using low weights to prevent people feeling intimidated. If a person is new to exercise and sees a 40lb barbell then, quite possibly, that beginner exerciser could very well be put off even considering the tape as it would appear out of reach.
Also, I'm talking about women now, some people tend to think that if they lift weights they'll end up looking like Arnie so until they learn more by practice and by observation/reading etc they will always be of that mind set. Men and women alike who aren't used to exercise have to start at the bottom. You can't run before you can walk!
I don't think the beginner tapes are particularly aimed at the majority of us here, they are targetted more to get those people that don't/won't exercise to give it a try.
How many people outside of the gym do you know that exercise? I have gym friends and non-gym friends. Its the non-exercisers Cathe et al are trying to encourage and after a while, who knows... S&H, IMAX2 etc etc? From little acorns....
Not forgetting, either, sometimes we all have an off day and really don't want to push ourselves for whatever the reason, a beginners tape from Cathe could come in real handy, afterall, it'll be a workout from an brilliant instructor from whom we trust to provide an interesting workout albeit at a lower intensity.
That's my view on it anyway and if Cathe can encourage non-exercisers to try it out and find out what all the fuss is about, then good on her!