The reason is simple.
The Interstellar Society is a social system with greatly differing levels of power.
In such a system, the adage "help comes to those with virtue, and little to those without" simply doesn't exist.
No matter how good your reputation, how kind you are, you will not gain any extra benefits, and may even lose most of them—clearly, if you can exploit and suppress the weak more, yet give it up because of foolish compassion, isn't that a loss of profit?
In the Interstellar Society, which takes profit as the direction of all actions, there is no room for compassion for the weak.
However, Human Civilization still spoke such words.
This can only indicate that behind this compassion lies greater profit!
Yes, according to the mindset of the Interstellar Society, this is the answer any weak party could think of.
But so what?
No matter what unknown information is behind it, as long as the result is real, it means greater profit!