This would be more interesting if they were offering some sort of simulated reward instead. For sufficiently large, otherwise unreachable rewards giving in might even be the correct answer.
If someone expends resources in a way that has a good chance of influencing a person similar to you to do X, you can conclude that there is a good chance they want you to do X.
If this expenditure also harms you, then it may make sense to not do X.
Don’t give in to blackmail, duh.
This would be more interesting if they were offering some sort of simulated reward instead. For sufficiently large, otherwise unreachable rewards giving in might even be the correct answer.
What’s “blackmail”, especially given that these are aliens, and there is no understanding of their motive?
Understanding is not zero.
If someone expends resources in a way that has a good chance of influencing a person similar to you to do X, you can conclude that there is a good chance they want you to do X.
If this expenditure also harms you, then it may make sense to not do X.
I already answered in that thread