I think the idea is that you could use low resolution / detail models that take up less RAM and are faster to process and DLSS hallucinates a high res image.

I also did that (and some development) and hated that basically every phone behaved differently, even sibling models from the same manufacturer. J2ME was a nice idea but every phone had different glitches. The emulators were shit. So we had almost all models of all major brands there and had to test everything on all of them.