The interstellar thief lives a life on the edge, especially now that the Skull Army is being besieged by the Church. Without the geographical advantage of the Skull Star Domain, they would have probably been swallowed by the Church long ago.
Thus, the Skull Army is actually facing an existential crisis. In the face of such a crisis, power is not as important. The emergence of Xu Mo might provide a breakthrough for Skull Star. If successful, his position as the leader would be only natural.
If it fails... then it means annihilation. Everyone would be wiped out, so who holds power wouldn't matter.
Moreover, Lincoln knows very well that it's not so easy to be an interstellar thief anymore. Chaos is reigning now. Although it's suitable for fishing in troubled waters, it's also easy to encounter a powerful fleet. Xu Mo's proposal for a transformation was quite appealing to him.
