The problem with these journals isn't that they accept low-quality papers. They're called that because they don't make an honest attempt at peer-review, and the publishing/editing fees are pocketed by the publishers.

IEEE Access is an example of a journal which charges a hefty "article processing fee" and publishes rather mediocre papers. But I wouldn't call them a predatory journal. They do get feedback from real researchers working in the field, they do reject fake and obviously-flawed papers, and they do not just use the publishing fees to enrich themselves. The journal in the OP did none of these things.