There’s absolutely no age cut off for video games. I would even go further and say that more seniors should play video games.
But, I also wouldn’t be too judgy with people who think video games are for kids. This is all thanks to decades of marketing. Atari, the first popular video game console, was sold along side TVs and other electronics and was targeted towards everyone. But then Nintendo decided to market their console as a toy, instead of a consumer electronics product. Also, they had to pick a “boy” vs “girl” aisle, and they picked “boy”, which is why video games aren’t seen as girly.