Earlier quoted context omitted.
You literally just described a really shitty laptop from like 1995. Woah guys my PC is so cool and I love it! I can plug in another monitor and soon it will support a mouse . Have you ever tried a real computer, saying an iPad is more useful than anything else is just wrong.
What "really shitty laptop from like 2002" had the weight, the display, the battery lifetime, ... of an iPad Pro?
If you often do carry it (without the other gear), then I can maybe see it, though you can buy a used small thinkpad that can easily run the terminal programs.