Being a big believer in "not wanting to get up and swap out the DVD's", I think the idea of being able to stream to the TV makes perfect sense.
For those thinking about doing the same thing, I can provide some advise. Don't purchase a ChromeCast expecting it to work as is described in the attached article. ChromeCast apparently requires an active Internet connection at all times... which when you are streaming movies from NetFlix is pretty much a given, but when you are in an RV Park in the middle of nowhere, an internet connection might not always be available or fast, so streaming your own video on a LAN might be the only practical choice.
And, with Chromecast, you have no additional choices. At least as far as I can tell.
And, I hope by posting this if someone knows something different than I do, you can save me a trip to best buy to return the Chromecast for a Roku Streaming Stick. Please save me the trip.