It is a neat concept. But I got a rpi with 4.3” touch screen that can do the same.
I have the original M5Stack Cardputer based on the ESP32-S3. It's pretty cool but I never really did anything useful with it that I couldn't already do with my other ESP32 boards. The form factor is cool but I never really need a full keyboard for my microcontroller projects. This new RPi CM0 based unit seems even less practical for me since the specs show it to be underpowered and no real competition for other RPi setups. I'll still probably buy one at some point just to play around with it, but there's nothing I want to do at the moment that I don't already have other hardware for.
Yeah, that's kind of how I feel about it. It's ok interesting but I don't have a direct use for it now and don't have one in mind. I'll probably pass on it the more I think about it.