> but in revision they apparently found that the DOM tree is code generated by code and thus an expression of the program.

It would seem to me because user browsers are user-modifiable open source, there really shouldn't be any deep expectation by any web content producer that the generated code into DOM will be displayed in any user consistent manner. But I suppose if that was accepted rational, that means ad blockers should sit deeper in the browser (or at the network level) to avoid problems with countries that view personal modification as digital copyright infringement if the license doesn't allow it. That should secure ad blocking — until legislation specifically bans ad blockers as a function completely...

It feels like it would be a big step to move from gatekeeping personal modification, to compelling code generation by the user from the framework of copyright.