One must admit that the Flesh God Sect looks quite unconventional in the eyes of normal people.
Only the dock laborers who earn their livelihood through physical strength would initially join for a good breakfast.
As for others, not to mention the people of the Upper City, even those in the Lower City are unlikely to join something as strange as the Flesh God Sect just to become stronger.
This was something Lette noticed from the number of new members after he exterminated the Disaster Crocodile at the time.
Everyone saw with their own eyes how those dock workers became so powerful but still chose to keep their distance.
This indicated that the current model of the Flesh God Sect is unable to preach to a large scale.
Its benefit target group is too precise, and as a result, it backfires, failing to attract people outside the target group effectively.
Thus, to preach, to expand the influence of the Church, to spread the glory of the God of Blood and Flesh,
