why do review sites always recommend the same casinos

Every review site I check out seems to have the same top five or six casinos up front, all glowing reviews, even if players in forums are saying the exact opposite. Makes me wonder if it's just a copy-paste thing or if they're all getting the same affiliate kickbacks. I rely on stats and data for sports betting, so seeing the same recycled info feels lazy, like they aren’t really testing reliability or withdrawal speeds or any of the stuff that matters.

Does anyone actually know a review site that lists both pros and cons and actually rotates in new casinos, or is this just the way it goes now?