If this was a frame or a kit I could attach to an existing board, I'd be ordering it right now. Shipping whiteboards is expensive so I hope that might be an option.

As the Apple Pencil has demonstrated again, most new things aren't always quite new. There's few form factor, interface, or screen innovations. What will be new is new ways to create using what we have.

Where you come across them, Naysayers are usually self-doubting doubt worshippers. Every person with unimpressed input should be taken with a grain of salt relative to how much a person feels the only thing of value is if it's something new or novel.