Achieving HiDPI on 3rd party external monitor plugged into a modern MacBook (Apple Silicon)

Upon connecting an 3rd-party external monitor (probably not important, but it's Dell U2719D in my case) I observe that the rendering is blurry. The Displays settings show that the monitor's native resolution (2560 x 1440) is available *and set*, but the "2560 x 1440 HiDPI" is absent. I want to add this option, without use of 3rd party apps, especially because evidence exists that they aren't panacea either. The guides I saw online point to the tools like this one . Unfortunately, following them didn't produce an emergence of new 2560 x 1440 HiDPI option in external monitor part of Mac's Display Settings. Were anyone here successful in enabling HiDPI option for 3-party monitor on any M* MacBook? Thanks