Dad shows are middlebrow
Traditionally, dad shows air on a major network and feature a male lead. We're talking CSI, Blue Bloods, NCIS -- a lot of cop shows. Generally, these shows are name brands starring name brands, and available on network or basic cable, and heavily advertised on billboards and the sides of buses, and they're long-running, because there's nothing dads appreciate more than continuity and the comfort of routine.
If you've ever thought to yourself, Wait, NCIS is in its 13th season? Who even watches NCIS?! The answer is, probably, dads.