Before people get too excited about using a Mac to run iOS, be mindful that there will not be any touch display on the Macs, even when they are capable of running iOS apps.
If you have ever used VNC to run an iPad from a desktop Mac, you will know that the GUI is not as natural as a multi-touch interface. We'll have to see how Apple adapts the touch interface (Cocoa touch) to the mouse interface (Cocoa), and how ASIAIR user interface "feels."
Some multi-touch actions (for example pinching or stretching the display) will likely be done using the touch pad of a MacBook. But how you pinch without a touch pad on a Mac mini could be interesting :-). Scrolling the RA and Declination values in ASIAIR could be "interesting" too :-).
On the other hand, buttons and pull-down menus, and typing in search fields are probably more natural on a Mac.
I might find out soon; I had ordered a MacBook pro with the M1 chip that is arriving in mid-December.