I have, oddly, tried an experiment where I use my M1 MPB 13" like a Mac Mini. That is, I remote into it with my 2018 iPad Pro 12.9" using Jump Desktop, and whenever possible I just use my iPad Pro for everything when I am out-and-about. So, Magic Keyboard iPad Pro for writing and blogging with Ulysses, DEVONthink for information gathering, Pages and Numbers for documents, Freeform for meeting notes (with pencil), Mail, Firefox, Obsidian with iCloud sync for keeping track of my world, and Affinity Photo, etc., for photo editing.
If I need to do anything crazy, I just remote into my MBP. the crazy thing is, once I quit being file-centric, and instead thought about everything from the app perspective, I am able to do everything (so far--it's been a few weeks) from the iPad and have only remoted into my Mac for a few specific reasons. Definitely something that would work long term.
So, I am definitely going to get a new iPad 12.9" (either Plus or Pro) and make this work.
(That said, if it ran MacOS as well?????? SHUT UP AND TAKE MY MONEY!!!!)