I disagree. It may not make your network “more secure” but it does decrease your visibility somewhat. You can argue that someone who’s looking to hack your network would go to the guy trying hardest to be secure, so would attack the hidden network. I would argue that someone would go after the least secure and easiest to find. That is, the person who has done the least to “protect” their network. That in itself is a form of security. So, I’ll keep hiding my SSID for the time being.