Facing the world-ending catastrophe, different people have different attitudes.
Most people would certainly think, "Let me ascend quickly, so I won't have to stick around in this soon-to-be-destroyed world"—fast, safe, no hassle, isn't that perfect?
However, with only a thousand years left before the apocalypse, cultivators in the Golden Core Realm don't have enough time to achieve Feather Transformation, and even most Nascent Soul cultivators will meet their demise. What should happen to these fellow disciples? Thus, there are those with grand ambitions, like the Penglai Myriad Phantoms Immortal, who want to protect their sect, at least to buy the disciples with lower cultivation levels more development time.
The powerful figure who established the Golden Cicada Temple likely had similar intentions, right?