As stated in that PR which itself also references a post in this thread:
Since the number changes as people disconnect/reconnect/go afk/return from afk/change their preferences/etc., the number fluctuates so its just not worth informing the player about it.
…
It has only caused confusion and frustration despite my best efforts to explain why this is the effect and why it is desireable.
…
My hope originally with the messages was to inform the player approximately how long it might be, but players are too focused on when their relative position is further back than it was a moment ago.
I think it is worse removing the messages, but honestly I’m tired of trying to explain how it works, why numbers fluctuate, and having to justify the reasoning. Its just not worth giving the player insight into it when its proven too difficult to grasp.
Larva are in short supply so don’t squander your life that the queue prioritizes giving you. If the hive sucks at capturing marines, then that hive is likely to fall regardless. It still places those who have been waiting longer ahead of those that have been waiting less, and I have removed any penalty as far as your position in queue allowing players to enter the thunderdome, play as a face hugger, disconnect, or go afk. Your relative position will remain as it was while you are currently unavailable because its just your time of death.