The only way I see DMCA applying here is contributory infringement in enabling modification of the page.

With that in mind I think the question to be answered is does a user/viewer have the right to modify a page in their own web browser or must they view the page as intended by the creators?

You can get in to technicalities then like are Links creators committing contributory infringement, but I'm not sure that's helpful.

Should a user be able to purposefully block parts of a page?