The presence of magnetizable (ferrous) metal in the vinyl and the question of static charge building up on the LP surface are two entirely different things. As some know, you can buy a device designed to degauss an LP; I don't know whether it's still on the market, but I think Furutech made it (and sold it for something like $2500!!). In reaction to that product, there were a lot of on-line debates about ferrous material in vinyl. Some talked about buying much less expensive tape degaussers found on eBay, to do the same thing for less money. But nowhere at any time did I read of any convincing evidence that there actually IS any ferrous material in vinyl. The thought that newly made LPs would be free of this (non)issue is kind of laughable. Anyway, to the best of my ability to investigate, there is no evidence that vinyl contains ferrous metals. One of my audiophile friends has a Furutech degausser gathering dust in the corner of his listening room. He would rather not talk about it.
On the other hand, as anyone knows who plays LPs, the surface of an LP is very prone to pick up static charge, and there are various ways to deal with it. The most popular is using a Zerostat, although many do not use the Zerostat properly. However, it makes us feel good to use a Zerostat after brushing.