Your argument is air tight but it doesn't support the party line so you will likely be called out for your heresy against the Church of DECA.
Wireless is supported (directly or indirectly) by many of these streaming devices and smart TVs, but there are a significant number for whom wireless cannot work due to the proliferation of wireless installations in a relatively small area.
If for no other reason than that Ethernet can easily and cheaply be routed, it makes more sense as the device density increases.
My point was not that he shouldn't run Ethernet because of the "Church of DECA". Rick made the comment that he was going to run CAT5 to all his locations to get Internet access for his receivers. I was pointing out that it was not necessary as DECA will handle what he wants. DECA has its place and using it for MRV is exactly what it is there for. If you can keep traffic off your network so that other devices have use of your network with the possibility of interference, why wouldn't you want to take advantage of that?
As for routing CAT5 being easy and cheap, while CAT5 cable is cheap to purchase, routing it in someone's house is not always easy or feasible. While I would recommend any new house being built to look at having CAT5 run to every room, retrofitting a house is not always a solution.
In my house in particular, the bedroom is part of an addition that was added onto the house. Trying to fish CAT5 cable from the basement up to the attic then over to the bedroom is not going to happen easily.
In cases like that, I would actually recommend the idea of using a modified DECA setup where you have a switch installed at one end and can connect devices to the Internet via the DECA cloud.
Today's problems don't worry me, I haven't solved yesterday's yet.
SlimLine-3 Dish w/ SWM16 (HD Service / WHDVR) / Full Setup
HR34-700 / Panasonic TC-P50G25 HDTV / HDMI / Networked - DECA / Family Room
HR44-700 / Samsung HCM5525W HDTV / Component / Networked - DECA / Bedroom
HR24-100 / Samsung HCM5525W HDTV / Component / Networked - DECA / Bedroom