I need to amend my previous post. My first impression upon arrival to Sakhalin was that there was only one conveyor belt in the baggage claim area. This was reminiscent of the airport in Turkmenbasy, Turkmenistan. It's quite a nice looking airport, see here and here. However, the Turkmenbasy airport has a single very long baggage claim conveyor. It snakes around an entire large room that must be close to 50 meters long. It baffles me why they'd make it like that when they could have easily had two (or more) shorter conveyors which would of course mitigate the problems whenever the conveyor needs maintenance. Anyway, that was such a typically Turkmenistan thing, to have something be deliberately fancy for the sake of fanciness (or perhaps an attempt at some obscure world record) that was ultimately not very practical.
Back to the topic at hand, the lonely single conveyor in Yuzhno-Sakhalinsk airport (IATA code is UUS for reference). This seems to have been borne more out of necessity given how tiny that room is relative to the number of passengers it is attempting to accommodate. Also, the passengers displayed the same poor baggage claim etiquette as nearly everywhere else I've been which is that they crowded around the belt and did not let anyone else in to reach their bags. This didn't really matter to me because my bags did what they nearly always do which is arrive almost last (but never get lost!) so they crowds had finally thinned by that point.
Bonus picture: Yuzhno-Sakhalinsk airport.