what’s the catch with those huge “$1000 bonus” offers

always see those giant first deposit bonuses plastered everywhere, like “get up to $1000 extra” on your first buy-in. feels like if it was really that easy everyone would just cash out the free money, but i never see anyone actually talking about finishing these promos ahead. i know there’s gotta be rollover requirements but can’t tell what’s a straight deal and what’s just a trap for slot grinders like me who like a little variance.

last time i checked the details on one, it said you gotta wager the bonus + deposit 30x to clear it. for slots that’s a ton of spins just chasing break-even, even more brutal if you mostly play poker or blackjack and the games barely count or not at all. wondering if anyone actually clears these without losing most of their stack or if i’m just missing the sweet spot on how to work them smart.