X40 wagering requirements on bonuses while you only credited 5% of the bet amount on other games than slot is always a ridiculous terms because you are forcing users to play slot which we all know that is worst game to accumulate wager.
I would honestly argue that, because I've seen lots of times how people successfully wager on slots 40x times, it's not something impossible. 5% on live casino and other games is also a fair condition in my experience, because it's even easier to wager in roulette, so if the percentage was 100% casinos would work in a loss.