You go to Munich and visit the $1M rooms for the oligarchs and what do you see for streamers?
Mostly Aurender at around $25K, not saying Aurender is the best, I'm just saying $25K is the benchmark ie at that end of the market streamers are seen as important in the chain.
Even in the $150K system rooms the streamers are minimum $10K, so yeah manufacturers are telling you when they are demoing their gear, be they speaker or amp manufacturers, that streamers matter.
In my system I use the Lumin P1/L2 combo and yes the fiber optic I/O makes for a very easily heard sonic upgrade versus ethernet LAN.
Apropos don't let the "makes zero difference" crowd tell you otherwise.