I can see why you'd think so, and I think to some extent bitterness drove this article. The article is also slightly bait, because the entire premise could have been put in the heading: "Anti-cheat software employed by some games prevent Steam Deck from running them."

The author does explain their bitterness (one of their names didn't make the cut) and does explain why and calls it 'reasonable.' But they include jabs like "Steam's broken store" that are somewhat left-field that makes me thing they constructed this article to do damage as well as be click-bait.