I think it's a great teaching tool but maybe they should just concentrate on that, having it as a cheap SBC for teaching purposes. The Pico Pi is great also, for experimenting.
There is alot of competition now. Every Tom, Dick, and Jane is coming up with 'this is better than the Raspberry Pi' products and maybe they need to rethink how they (those that design the Pi) want to move forward. These days you can get quite cheap secondhand laptops, and mini pc's and such.
Maybe just a board that plugs into a standard USB2/3 port, and has a Raspberry Pi GPIO, that can use most of the same HATs and such, that sort of thing might be a good training/learning tool.