It's not clear to me from your comment whether you are agreeing or misunderstanding. The underlying method is an idea, not an implementation. It is not subjec

It's not clear to me from your comment whether you are agreeing or misunderstanding. The underlying method is an idea, not an implementation. It is not subject to copyright. It might be patentable in some places, but that has nothing to do with the DMCA. Developers generally scorn software patents (owning an idea) but respect copyright (owning an implementation). The designers here are trying to assert copyright over an idea, which you absolutely cannot do.