I have a hard time parsing your argument in the context of the original post. FSF is not against all forms of copyright. FSF is against all forms of software patents, and believes copyright should be more limited and sharing in particular should be completely legalized.

What FSF is particularly against, in this post, is combining, arguably completely separate, trademark laws, copyright laws, patent laws, and trade secret laws, under a useless umbrella term "Intellectual Property" which can be leveraged for propaganda purposes and is of little real use.