>>12859571locking them away on their own planet entirely tuned to them, every animal and plant tuned for them and broken will make them realize this and either equalize back to becoming natural or create more artificial life, whatever happens here is whatever happens here after they left
their machines are broken and the defenses they left for us stopped functioning so long ago no one remembers even the folk stories. the last time they were here too was in the late 1500s to recover a crashed ship, and with how quickly they recovered it, it's very unlikely they stopped to chat or wanted to interact with us again
everything that happened sumer they likely know about, I would not want to help this place again either