One can get fine sound quality with top line streamers and dacs, this even with less than optimal networks. This based on latik and many other's experience, mine as well. We are talking marginal gains with most of these 'in the weeds' network optimizations, these are the sort of things you do when main components in streaming chain taken care of. So what you have is the usual thing when adding several marginal gains together, that being very meaningful improvements at highest levels of resolution/transparency.
And there is in fact and will probably always be multiple paths towards network optimization. I don't doubt for a second the benefits of products like Telegartner switch, Network Acoustics Muon. There is no doubt I'd be using one or both if having gone in different direction with my streamer. Eliminating noise on network pays off handsomely, based on reports from respected individuals both are excellent devices and deserving of placement in best audio systems. See, we can agree!