I meet the same problem. I bought macbook pro M1 last month, and I cannot connect it to my display with a 2K resolution, it really hurt my eyes! I have been search a solution for enable HIDPI with the 2K display, however there is no way at all, all the tools ever are able to use now failed with silicon, So I have to spend another 1000$ on a 5K display?It's really not humanize.