Football fans always hold footballers to a different standard with shit like this. You see it when a good player stays in Scotland their whole career - some folk moan about them never testing themselves down south or abroad as if these guys don’t have families or anything else to consider.
That’s a more extreme example but in Kerr’s case, if someone is offering you a similar wage to play at the same level, an hour or two closer to home, you’re probably taking it.