In my experience a good rule of thumb is "will this need a lot of upload bandwidth?" Wireless devices running off of my AirPort Extreme typically can get 12-16

In my experience a good rule of thumb is "will this need a lot of upload bandwidth?" Wireless devices running off of my AirPort Extreme typically can get 12-16 mbit download without breaking a sweat, the only real issue is upload speed is typically not nearly as fast or stable as download. So, Apple TV? It's all download, so wifi is fine. XBox One? About half and half, so that gets a wire. Printer? All download and barely any bandwidth needed anyway, wifi. Desktop PC? Wired, of course. I dunno where you're seeing this hostility to wired networks, the only hostility I've seen to them are from people who have legitimate reasons to not want to do it (or can't) i.e. renters, people who are not particularly handy, or people who don't have those high demand needs. For your average Joe running a phone, maybe a stream box and browsing Facebook on a laptop, a $40 wifi router will handle that just fine.