I would not trust anything that polygon would write. If anything, it was never as simple to create a game before as it is now, if you look at Steam it is basically an indie renessance.
That's exactly the point though - it's an indie renaissance for consumers, but for creators it gets harder and harder. As creating games gets easier, competing against everyone else to make them gets harder. It's the same reason as why creating a best-selling book is hard, because everyone can and wants to write a book.
