Yerss to all of the above. However...
Keef would probably have, for garters, the guts of anyone who actually recommended powerline and such. (Being a radio amateur in a parallel universe, he has a vested interest in that part of the RF spectrum)
Having run Ethernet (and 10-base-T over multiple roofs before that, for that matter) all over the place, I reckon to know the score. But still, at my advance years, I limit my ladder-climbing to what is absolutely necessary - and am too tight to pay someone to do something I should be able to do myself, soooo,
I'm delighted that WiFi works so well, both with our lappies and our printers and our phones and visitors..... etc.,
So probably won't ever use wired connections again.