why do some crypto casinos have weekly challenges nobody talks about?

Some of these crypto casinos have these weird weekly or monthly challenges buried in the promotions tab but I barely see anyone mention them, either here or on any of the regular channels. Like, you spin a certain slot five days in a row or rack up some random side bets at blackjack tables and supposedly get bonus rewards. I always assume this stuff is just fluff but when you dig in, the math sometimes shows there’s a small +EV if you were grinding anyway.

Kinda makes me wonder if no one talks about them because the payout’s low or maybe only regulars even notice. I’m also not sure how legit the tracking is, since crypto casinos aren’t always transparent about how they’re counting “active days” or qualifying bets. I’d love to hear from anyone who’s actually cashed in on these and if it was worth the hassle.