StageManager is completely trash.
Window resizing is trash.
The windows have a mind if they're own and no way to know there they're going.
Can't use iPad internal speakers with an external display. My clients _love_ when I have to pull out my Bluetooth speaker and then pair it to get sound. Amazing!
No virtual machines (UTM).
No usable terminal.
No extensions.
Battery life is terrible. Charge stops due to the iPad getting too hot while in the Magic Keyboard/Case, being charged by the OEM cable and block. "Oh you thought you had 100% battery? Nah it's been sitting at 80% for the last 10 hours not charging even though the icon is green and there is the lighting icon.
Is there anything that is actually a portable pro device with tablet like ergonomics and removable keyboard that I can actually use to fit my needs?
I do like the screen
A Surface Pro?
It sounds like you want the freedom of a general purpose computer. An iPad Pro is not a general purpose computer, it is a tablet.
Apple is still figuring out Stage Manager and windowing on the iPad. Consider it a preview.
Pro does not equal developer. A "pro" device can be for professional artists, teachers, sales people, etc ...
How are the sales, teachers, etc getting around the fact that you have to use an external Bluetooth speaker when utilizing an external monitor. Teachers and sales typically have to give lectures and presentations.