I haven't watched the video fully but are you sure they aren't referring more so to just the ray tracing quality with regards to reflections etc.? Which has always been acknowledged to have a drop in quality when using upscaling (more so when you go down to the lower presets) since upscaling has never worked on RT reflections etc.
Anytime the "better than native" comment is made (which btw isn't just from DF/Alex but also gamers nexus, HUB, TPU, computerbase, oc3d.net and even hardware unboxed etc.), it's been in reference to the aspects which upscaling does improve over native IQ i.e. reducing shimmering, aliasing, essentially having better temporal stability on the whole and rendering in more detail, basically everything aside from RT hence why ray reconstruction is seeking to resolve the IQ issues with where RT and upscaling is concerned.
I can't see AMDS DLAA competitor being any good tbh, dlaa is good because of how it resolves the issues with current AA methods (which is what makes dlss so great) where as FSR in its current form only increases the artifacts/issues with things like shimmering, aliasing etc. further.
And yup sadly I said that from the very beginning, developers have even said it themselves
Can't blame them tbf.