A rooted piece of trashy IOT is trashy IOT. It's an acquired taste, the excitement of putting a black box insecure linux device on the home network to add to your home infra admin duties.
Rooting gets you additional means to reverse engineer the proprietary software system but doesn't automagically lighten the box.
It's all relative of course, maybe you view anything you can Ghidra as not-black-box. (though this is kind of tangential to rooting - for a many/most devices you can get a hold of the blobs to reverse engineer without rooting anything)
