In 2024, with GNOME 45, Wayland, and 1.25 fractional scaling, regular DPI displays still look better than HiDPI displays. This is a photo of Discord on two laptops side by side.
The blurry one is the HiDPI display from Framework 13. The sharp one is a regular DPI display from Dell XPS 13. Both laptops.
The difference is even more stark in person.
Even the screenshots from the Framework are blurrier than the screen shots from the Dell.
This is an Xwayland and Electron issue, not a Discord or Gnome or a Display issue. This is because Electron under Xwayland (and also somewhat under Wayland) doesn’t behave well with fractional scaling. If you want a true comparison, try opening Discord on Firefox with Wayland. It will be night and day in terms of sharpness compared to regular DPI displays