TSC Coops

I’m wondering how Tractor Supply can get away with listing this coop as “ fits 18 birds “?? Maybe if they’re talking about Quail that might not be so far off.

I currently own this coop with 5 large buff Orpington hens in it. I have 5 chicks, 2 Blue Plymouth Rock and 3 Gold Lace Wyandotte. My question is, I know this coop could not comfortably fit 18 birds, but is 10 too many? They will free range for a few hours a day in the summer.