But none of this has anything whatever to do with magnetism or demagnetizing an LP, the need for which is still a controversial topic, at best.There's no controversy among those who've actually tried it - at least not about the need. The benefits are clearly audible and have been verified by multiple listeners in multiple systems.
Why these benefits occur does remain controversial, in the sense that hypotheses regarding the precise mechanism involved have not been rigorously tested.
Those willing to enjoy a demonstrable sonic improvement prior to receiving proof of just why it occurs may be naive, but aesthetically satisfied nonetheless. :-)