Uncle Lu spoke with arrogance. That was because of his power and might gave him the right. In the Divine Eagle City, Uncle Lu's battle prowess was among the top hundred; he was a mid-tier God King.
The strongest in the Divine Eagle City were Luo Fu, City Lord Luo, as well as the Demon-Killing Pavilion Lord. All three were peak-stage God Kings. In ordinary circumstances, there wasn't any God Thearchs in ordinary cities. If someone reached the God Thearch, Heaven Emanation, or Demon-Killing Battle God levels; he would go to the prefecture city or directly to the few larger domains within the Heaven Domain. As Uncle Lu's strength was that of a mid-tier God King, he was someone of importance in the Divine Eagle City. If not, he would not have been tasked to protect Luo Ting either.