ReTerminal – Embedded Linux with Raspberry Pi CM4 and 5-Inch Multi-Touch Screen (seeedstudio.com)

Looks exciting to me!

As a computer professional, this tablet could be useful due to it's IO. The integrated ethernet & USB ports provide practical connectivity.

The tablet form factor and GPIO pins means I can develop Raspberry Pi applications on it in real time, then port the finished code to a smaller Pi Zero once finished, & then move it on to the next thing.

Also, if Android is a hard requirement, the Raspberry Pi can run Android 11 - without a locked boot loader & with root.

If you don't need the any of the physical IO, then yeah I guess a cheap Android tablet would probably do for most projects.

This has a few physical buttons, Raspberry Pi GPIOs, PCIe, GbE etc so a lot more options for expansion.