I’m not saying reflex is bad and not used by esports pros. Its just the use of theoretical is not the best choice of word for the situation, as it does make a change, its just much harder to detect, similar to the difference between similar but not the same framerate on latency, or the experience of having refresh rates that are close to each other, especially on the high end as you stop getting into the realm of framerate input properties, but become bottlenecked by acreen characteristics (why oleds are better than traditional ips, but can be beat by high refresh rate ips/tn with BFI)
Regardless, the point is less on the tech, but the idea that AMD doesnt innovate. It does, but it takes longer for people to see t because they either choose not to use a specific feature, or are completely unaware of it, either because they dont use AMD, or they have a fixed channel on where they get their news.
Lets not forget over a decade ago, AMDs mantle was what brought Vulkan/DX12 performance to pc.