why casino reviews never discuss long term player retention rates

Reading all these reviews, they’ll tell you everything about welcome bonuses and flashy new games, but I never see anything about how good a casino is at keeping players coming back year after year. I’ve been spinning slots online for more than a decade and the sites that last in my bookmarks are the ones that treat regulars well, not just big spenders or first-time depositors. Stuff like monthly rewards, personal touch from support, fair promotions - never mentioned.

Feels like most reviews are written after a quick week of play, so nobody notices if loyalty rewards dry up or if the games get tighter for long-haulers. I figure long-term retention is way more important than another 100 free spins, but it’s always missing from the writeups. Anybody else noticed this gap in the review world?