Yes, most of the problems regarding "far" remote access are solved now, with screen and/or other tricks that were more prevalent a decade ago. Typing with 100ms+ feedback indeed needs some getting used to, after you were exposed to this century's LANs. It seems to be a skill these days, just like talking while hearing your own voice delayed. Telnet, that we all forgot, even had a linemode (local echo mode), that can be emulated:
rlwrap ssh $* "zsh -i"
However, the technology still sounds interesting, it appears it could be more useful than a mix of other solutions for related problems... I'm still annoyed by local uncoordinated wi-fi access points, just to make it easy for people to connect to the "closest" one for no reason. Such design decisions still make command line access awkward at times.