Yeah it was odd to read that description being presented as an oddity - that sounds like most households I know. If you have a wife, kids, or roommate and don’t enjoy being holed up in your own room the whole time you play (and those sharing your house don’t just want to watch you game all night) then in house streaming is a huge boon.
I PC game, but most of my gaming is done on the couch, streamed onto my phone. I’ve been very tempted to buy a dedicated streaming device lately to avoid draining my phone battery while playing