It's both an insult to what publishers do bring, and something of an own-goal: if you want to replace a scummy operator, you have to understand what they bring to the table so that you can replace it with something better. It's identical to the people who scream about Apple and Google taking a 30% cut of app store sale - these people are clearly clueless about business and are shouting to the world their ignorance about what that 30% gets you.
> And academia is already about networking; collaborations, at least in CS and Mathematics, are a big part of research
Academia also has a lot of political backstabbing and competition for dwindling grant money. But Elsevier's role isn't finding collaborators - it's finding reviewers, which is a distinctly different thing. You also can't find blinded reviewers yourself or via known associates, because that takes away the blind.