Rather than sympathy and pity, it was evident that the emotion of self-preservation was overwhelming and demanded their own protection.
What if they provoke something that they shouldn't or because of taking over this burden they were delayed and eventually dragged down or betrayed at the last moment? This wasn't a far-fetched conclusion, in a place like the Nightmare Shuttle no one can be absolutely sure that the person standing beside you now won't backstab you in the next second pushing you into the abyss of despair. No one here is an absolute saint and no one would risk their lives for a little sympathy.
They didn't want to be the next victim.
Not to mention that this Hou Yingfan had previously offended Chao Bin and Tang Shun. No one wanted to be isolated and excluded in such danger.
What do people do when they are so scared?
If there is only a little fear, and there is the hope of survival, most people will hide and seek refuge.