iMac display for Mac Mini

you may wish to make sure before spending money

their site says

Luna Display only supports devices running macOS, iPadOS, and Windows 10. Luna does not work on Android, Linux, or ARM-based devices.

and m2 is an arm based cpu

also a normal 1080p monitor are not too expensive and would use much less power than an imac does

You're not confused. With respect to Apple-Silicon-based (ARM-based) Macs, Astropad's Web site is ambiguous / inconsistent.

I suspect they meant to say that they do not support ARM-based Windows and Linux PCs, and were just sloppy, but you'll have to ask them if you want official clarification.

Servant of Cats wrote:

but you'll have to ask them if you want official clarification.

I don't think I'll go that far. I only posted the link to luna display because I have seen others here posting it as a reply, and possible solution, to other user's related questions. I think I will just avoid supplying the link to these types of questions. :)

their page shows this:

am I just confused?

sorry, no. an M2 Mac is too new to use target display mode.

but you could try Luna Display.

maybe the text I pasted was outdated, or worded poorly as one can get windows 10 on arm cpu too

OK. thanks.