Whats up with the negative comments on LBRP?

Hi there,

I am totally new to magic (have been active in the realm of metaphysics for the last few years more generally). It seems to me that the LBRP has a mixed rep: I read that some people love it; others say it caused financial loss etc. Is there some theoretical truth to that? Would love to know more before I start practicing it (or indeed if I should!)

Thanks!