Given the number of people who move for work, it doesn't surprise me, and I would assume that there will be plenty of people who have this apply to them, even if it is a temporary situation. We moved to the US. If something happens to DH and I, we do now have friends, but didn't know people well enough for the first couple of years. DDs school were quite insistent at one point, until I pointed out that it would take over 24 hours for family to get there if they couldn't get hold of DH or I.
What do people think happens to single parents who move for work? It's one of the big psychological background worries of single parents, that 'what if' scenario, where you don't know what might happen if you suddenly got sick.
I hate an emergency appendectomy a while back, and even with DH, who had to rush out of work, we ended up with just dumping DD with a neighbour while he got me to hospital, then he dumped me at A&E to rush back to DD. Without him, she'd have been sitting on the floor in the ER until midnight.
I can't see why it's beyond the understanding of some people that we don't all have family sitting around waiting to be our back-up, just in case.