Looking for a small, light, powerful lappy with phool linux sappot and a proper monitor like dell ultrasharp for colour accuracy for a good home office setup. Thought will invest in an m1 macbookair and multi boot it with linux for serious stuff and macos for the fun things.
These are my personal opinions:
I am assuming that Linux is not your primary or favorite OS. You will still be using MAC/Windows for browsing the internet, listening to your favorite music, playing a game, or editing a document.
Multi-boot setup may severely reduce your productivity because you will frequently switch between the OS for different tasks and while you are using one, the other one will remain unavailable.
It takes a lot of time to get accustomed and comfortable with Linux. It is hard to fall in love with it. Most of the people using a multi-boot setup will lean towards the comfort that (Windows/MAC) offer and start avoiding Linux like a plague. You may corrupt your disk if something goes wrong while fiddling with Linux.
Having a dedicated Linux machine is a safe and convenient option. First, you will have continuous access to it, hence you will use Linux over SSH or Remote Desktop while staying within your comfort zone on MAC/Windows OS. Second, you won't harm your productivity PC, you won't mistakenly erase your disk or loose your documents while trying to install/reinstall/configure Linux. Third, you will be able to multi-task, e.g. listening to music or browsing web while working on your Linux stuff.
You just need a good old, stable laptop/PC for Linux, won't need a very powerful one. I strongly recommend a debian-based Linux distro, Ubuntu Desktop for example.