The linked page says that it can be a hotspot.

Then it can be very handy in terms of its usability of wifi hotspot devices. In case you want to access intenret remotely on your laptop or in your car.

And in developing countries, you have to register your phones imei and pay tax if the value of your phone is greater than certain amount. And in that cases the amount of tax is maybe 50% of the actual price of the phone. So your phone is basically a brick with camera. And you get carry a second phone, which is inconvinence. With this I can see the potential use of it. Small, simple and useful wifi hotspot device with actual ability to call like normal phone.

But why not just your standard Android for that?

I used to have an Android head unit in my old car, I used my phone hotspot for connectivity

When IMEI is blocked (for not paying the tax) SIM will not work. Let's say I have Iphone 17, it would have to 70% tax of its value to get sim working.

Some of HMD's KaiOS phones can be hotspots too, I have a 6300 4G that I use for that.