The lifestyles shown in the series are unrealistic, even for well-compensated expats. The number of fly-in expats on lucrative "hardship pay" contracts has been declining, and I don't think there are more than a handful left, probably negotiated deals long time ago and by inertia continue to get all kinds of privileges: huge housing allowances, car and driver, club memberships, generous home leave, etc. The people portrayed in the show are too "young" (at least pretend to be, here's looking at you NK) to be recipients of such corporate largesse. If you were making that kind of dosh, you'd probably be too busy to have any time to mope, much less have an affair and drink like a fish.

Some expats take to the place, others can't wait to get out. The ones in this show are, for some reason, have the "can't wait to get out" attitude but remain. That is unusual, as people who don't like the place move on fairly quickly. If you don't like it, it can be a living hell. On the other hand, I know many, many, many expats, and most of them looove the place, even now. Really think of it as their home. They think of it as their home so much that those who left because of the protests and the pandemic restrictions did so very reluctantly. My forecast is that many of them will go to other places (e.g. the US, Australia, Canada, UK, Singapore), be there for a couple of years, conclude "what the hell is this crap" and come back to Hong Kong.