Nah! I think your safe there
Funnily enough, one of the worst sites we've been on was booked via Pitchup. Our limit is about £25, depending on time of year & area. We stayed on a cracking little CL site in Cornwall for £12/night. All we ask is a clean bog & shower. It doesn't have to be underfloor heated with piped music & rose petals on the floor. We avoid sites with pools/clubs/restaurants etc, as you end up paying for stuff you don't want/need. We also avoid sites run by chains, Haven springs to mind, they want top dollar & have more rules than the CC&C.