No, valve isn't, but neither is any other business I deal with. Both parties have their own goals and are simply working with each other to get there, and that is fine. Hell, it is like a business relationship in a way.
Here's the breakdown. Steam is not my friend, but they are, essentially, a business partner of sorts. The provide me games with minimal fuss and decent support, and I provide them money. Pretty good deal, and despite fucking around with things like paid mods and the mess that is/was greenlight, they tend to know to stay on the up and up when it comes to actually selling and providing the games because it just is easier that way. I want games for a reasonable amount, that run well on my pc, and that I can trust will still be there tomorrow after I purchase them despite them being entirely digital. I also want to know that if the internet is acting up, I can still access my stuff just fine. And steam, it delivers on that well enough, as well as acting as a storefront and community hub. Good service overall in that regard and I don't mind using it, even if I still think it could be done better, and that valve themselves could improve on things. That can be hashed out overtime, as I said earlier, different goals between the parties and all that.
Polygon has routinely demonstrated nothing but contempt for their readers, gamers, and anyone who doesn't ideologically agree with their narrow political lean. When it comes to my relationship with them, they have failed, utterly, to provide their side of the deal as journalists and product reviewers (this being accurate, reliable, relevant information about games and the gaming industry), so I broke off that relationship years ago (or in short, I stopped going there, stopped trusting them as a source, etc). As it is, this article looks like a bitter jealous ex trying to talk shit about someone else.
Personally though, I think I like this study as an explanation as to why.
http://www.businessinsider.com/journalists-brains-function-at-a-lower-level-than-average-2017-5