I am old enough to have played Pong when it was new, so a gamer for more than 40 years. Some days I do not play at all, but most I try to squeeze in a hour or so. I totally believe this has helped keep my brain active and exercised over the years. (I also thank the fact that creativity is a huge part of my profession. And that I have read hundreds, if not thousands, of books.)
Like the video says, too much of anything can be bad, even broccoli and water. But, it turns out video games can be beneficial. It sure is nice to be right sometimes.
So, be diverse in the things you do. And when you have time, pick up a game and work that brain of yours!