Hows everyones experience with IOT network?

I bought a TP link and am halfway in the process of crossing my devices over to the new wifi. I just discovered this IOT feature and tried to read as much as I could on Reddit but I seem to be getting mixed things and some people say they're just keeping their stuff on their guest network.

So I just want to know is IOT network worth the trouble setting up? I went the Apple homekit route and I have a good number of smart devices. The article seems intriguing with the "no interference on the dedicated server" so is IOT really the route I should go for?