I tried plugging my 2007 20” Apple Cinema Display into my M1 MBA via a usb c dongle. It worked, but everything was off—washed out in some colours, highly saturated in others. I tried tweaking display prefs with no luck, and googled. Someone had success getting an older display to work by plugging the display into the M1 laptop directly, NOT via multi purpose dongles/hubs. So I ordered an usb-c to hdmi-male adapter and plugged the display into the MBA directly—and success! The display now works as it did on my intel MBP.