Lin Shen originally didn't want to get involved in such matters, but the situation forced him to stand against the Star God Palace, and now against the God-making Race.
It's not that Lin Shen is unwilling to yield; even if he declared not to participate in the battle, the God-making Race would certainly not spare him.
The strength is evident, and even without opposing them, Lin Shen would always be a concern for others.
He is even less willing to pledge allegiance to the God-making Race.
The God-making Race was founded by the First Immortal, and at that time, they might not have had selfish motives, but wanted to destroy humanity.
Now, the God-making Race no longer has the goal of destroying humanity, but their actions are not much different from the Star God Palace, and their methods are clearly more ruthless.
The Star God Palace couldn't accommodate Lin Shen, so could the God-making Race? Lin Shen didn't want to take the gamble.