As for whether absorbing other people's chakra experience and those memories would interfere with him...
Uchiha Tenshu could only shake his head helplessly and sigh. "Child, you're overthinking it."
He only needed to use the ability of Uchiha Tenshu's left eye and send all the Chakra Seeds into the Twin Mud Gods' Small World.
Then everything within them could be separated out.
Uchiha Tenshu absorbed only the purest chakra and the fruits of cultivation—the boosts to strength, speed, and intelligence.
As for everything else...
Memories, souls, love and hatred, desires and the like—Uchiha Tenshu had no need for any of it, so he separated it all out.
The separated souls, memories, thoughts, and so on could also serve as the foundation for the growth of this Small World.
The entire Small World could break down and absorb all forms of energy to grow. By absorbing specific kinds of energy, it could also undergo specialized growth. For example, when it absorbed these people's thoughts and desires, Uchiha Tenshu could sense that the Small World's growth progress accelerated.
As though it had absorbed some kind of higher-grade energy.
This reminded Uchiha Tenshu of the legendary power of faith. Whether that was truly what it was or not, he intended to give it a try and divide these people into factions according to their beliefs.
The memories and souls of those who believed in him and were loyal to him would be bound using earth and water of the light side. Within the Small World, it would be equivalent to being reborn.
They could retain their own awareness and memories, continue growing within this Small World, enjoy longer lives, and continue to shine and contribute for him.
He would cultivate his own believers, who would worship and believe in him with unwavering loyalty