It doesn't support MagSafe so it's not something I would buy but it's very interesting. If it supported MagSafe and was only $100 I'd probably would have bought it just to try it out. Yes, it would make my 15 Pro Max a monster but it would be interesting to try.

That it plugs into the USB-C port is both expected and worrisome (also none of the product photos show this for some reason). I know it has the whole case to help but I'd be worried about putting strain on the USB-C port while your hands are down on the keyboard. Again, the case will help but you are absolutely adding strain to the port, the whole phone's weight is on it aside from what the case can help relieve which can't be much since it's not rigid. It's "Liquid Silicon" but since the phone plugs into the USB-C/Lightning in the bottom you probably have to first plug the phone in, then pull the case over the top/sides of the phone meaning its ability to reduce strain is extremely limited