Kaku mostly tells stories with cosmology and futuristic buzzwords these days. If you want to excite the imagination of a child and foster interest in science, I find his stuff potentially useful. However, the actual educational content is pretty poor.

I used to love Kaku as a kid. I read his book Hyperspace several times in elementary school and even ended up buying a string theory graduate text out of the induced enthusiasm. That book was scary impenetrable to me at the time. Lol

Now Kaku's videos and stuff just leave a bad taste in my mouth. It fells like he mostly sells science as some magical mysterious thing that is only accessible to the intelligentsia elite.

The difficulty of explaining complex concepts in a way that a laymen can understand is underappreciated.

Under appreciated and much needed.