It is a po-dunk town that is an onerous drive from people on the south side of the city (and south suburbs). Really I think the enthusiasm for this move is primarily motivated by people eager at the chance of not having to deal with literally any people who aren't white, since Arlington Heights even by northern suburban standards is blindingly pale.
Because anyone who claims this far flung suburb is somehow more accessible than one of the three urban centers on the whole continent with a real metropolitan rail network is simply not arguing in good faith. A quick glance at a map of Chicago shows that basically everything flows into downtown, not into fucking Arlington Heights.