Naturally, they would think this way since they weren't aware that Kisha already has an unlimited supply of meat and vegetables. However, no one would complain about having an abundance of supplies, would they?
This is why Sparrow didn't even entertain the idea of a supply run. Though he enjoyed hoarding, he had a clear set of priorities, with following orders at the top. His personal interests would always come second.
The other team leaders, of course, voiced their concerns to Sparrow. Their main reason for wanting to do a supply run was to ensure the Supply Center remained stocked. With supplies constantly being consumed and circulated within the base, they needed to maintain a steady source of replenishment to keep things running smoothly.