Anybody who truly cares about videogame and more general cultural preservation, or who just wants to enjoy a game, already treats anything to do with Copyright as no more than a polite suggestion.
The one good thing about this article is that it might make a few more Washington-area policy wonks aware of just how screwed up the current Copyright system is, as videogames and their preservation are a fairly non-partisan hobby. Outside of raising awareness, there's little to recommend in this article. Austin's TL;DR summary above says it all.
There is one thing I can add from personal experience, having actually done a few research and preservation efforts: a lot of older stuff never even had any sort of Copyright status in the first place. So the issue is irrelevant to a large part of early gaming history. And as a practical matter, the Copyright status of a lot of later stuff is completely untraceable, if there even is any.