Meng 37 was an inferior Desolate.
There wasn't a 100% chance of success for a Shaman's Wild Release ritual. And even if Wild Release was successful, there was also a chance of Wild Release being of inferior quality, leading to the grown-up Desolate having limited potential.
And Meng 37 just happened to be one of the latter, as an unknown issue had occurred when the Shaman performed his Wild Release ritual, leading to it almost failing. In the end, the ritual only barely managed to succeed, leading to Meng 37's growth being slower than others.
Currently, he was doing his best for the sake of his future.
In the tribe, every individual had their responsibilities, and any Desolate who couldn't provide any benefit to the tribe at all would be treated as a sacrifice to be offered.