How common is return and teleport amongst the general populace?

[Iscah]

...Y'shtola going on over there by boat at the end of 4.3, and then coming back by teleport with no discernible strain in 4.4/4.5 or whatever.

That makes sense though - if you need to attune to an aetheryte before teleporting to it, then of course you're going to have to physically travel to a new destination, but you can freely teleport back home at any time.