While I wouldn’t characterize myself as “ an ASR supporter”, I do think ASR has provided valuable insight in several areas.
1) DACs - Providing consistent measurements for every DAC they test is helpful, though as others have suggested, these are useful data points that are certainly not exhaustive with respect to how DACs actually sound.
2) Power conditioning products - As I mentioned previously, this is an area of the industry where I believe there is a fair amount of misinformation and even fraud. So I think some of the work ASR has done here has helped prevent some audiophiles from spending money on products that may have no - or even negative - effects on the sound of their systems.
3) Network switches - Same as power conditioning products, only more.