True, however this is also a function of the quality of the streamer (and DAC) you use. Very high quality streamers isolate you from the network. On my system routers and etherregen made not difference. So, you can improve streaming with inexpensive streamers and fiddle with the network or get a really good streamer and just improve the sound on your audio equipment.
Everything matters
I have now been tinkering for 10 years with my streaming set up and the principal lesson learned is that everything matters. Think about it: from the wall outlet to the router to one or more switches to the streamer and dac, the latter three dependendent on clocking and all of them depending on cables and power supplies), it stands to reason that e.g. changing a USB cable is very likely to compensate for a weakness in the chain, that if addressed, would result in an overcompensation by that cable. Therefore I look at individual component or cable reciews with a very jaundiced eye. It is the performance in the context of the individual chain, that matters. As a result I have had numerous ethernet or USB tweaks, be the filters, isolators or processors, cables and LPSs in and out of my chain. For what it‘s worth, the biggest impacts ranked on SQ I experienced were from inserting 1. Etherregen, 2. LHY Audio UIP, 3. 10m clocking of Dac, UIP and Etherregen and 4. LPSs on router, switch and Etherregen.
My main point though remains that praising individual components irrespective of the digital chain is borderline meaningless