Fix upscaling algorithm on Quest 2. Set a better standard for approving games on the store. Inform customers about games render resolution.
On Quest 2 upscaling algorithm looks very bad, for example games rendered at 1440 pixels looks very muddy and cause eye straining.
If this is not possible please ask developers to publish games at higher resolution, and inform the customer at the Quest 2 store games pages at which render resolution the game will be played.