There was no indication given that ESA had presented arguments any more nuanced than "hacking is illegal", nor was there a link to ESA's argument. Your comment, too, is a bit... uncharitable in its assessment of our intelligence.
Here is EFF's chosen title for this article:
Videogame Publishers: No Preserving Abandoned Games, Even for Museums and Archives, Because All "Hacking" is Illegal
Well, that, and about thirty other things.
Later, summarizing EFF's own article, is this sentence, which is its own graf:
Behind this hyperbole, ESA (along with MPAA and RIAA) seem to be opposing anyone who bypasses game DRM for any reason, no matter how limited or important.
This appeal to "hyperbole" is a straw man.