Capsuleers are seen prancing around this seemingly abandoned space, and warping to unused Jove stations. No other signatures appear. The footage does not have a high enough resolution to see if the planets are inhabited, but from what we can make of it, it looks like the planets do not have large cities.
Where did they go?
Did they succumb to the Jovian disease? Leave their physical bodies to upload their mind to a virtual world? Move to a different region? Perhaps they concentrate now on fewer systems, as they do not need two full regions of the cluster to support their shrinking population? Why then abandon their stations rather than move them, or at least strip them of all functionality?
I find it hard to believe than they went extinct so quickly - last contact was only a eight years ago, in YC118. Perhaps the activity of the Deathless may stir them once again into action, and cause them to reveal themselves again.
ooc acknowledgment: Thanks to yuanshenqidong for sharing the videos of their exploits; the links are to a Chinese version of youtube: https://www.bilibili.com/video/BV1Z142167HY and https://www.bilibili.com/video/BV19T421X7cQ/ . The low-res versions can be viewed without any subscription. The images of the previous blog post were taken from stills of the low-res version of the videos.