The important thing here is that when we as players enter a casino we want to have many privileges and among those privileges is that they have a very good way of rewarding old players,which means that a bonus would be ideal for them, but for the average player who is always looking for Bonuses and rewards in a casino, the only requirement that can be demanded at this point is that they are achievable bonuses, not with a 100x wager Because that is something quite Impossible,so when it comes to reasonable requirements,well I think it is in the Normality index.
It's definitely not reasonable to expect a casino or a betting platform to provide bonuses with no wagering requirements since that would probably have no effect for the casino itself. Casinos provide bonuses only to attract more users towards their platform, players that will stick to them and gamble every now and then, if they start giving away bonuses without asking for deposits or wagering requirements, they will simply be giving away money for free.
So having a reasonable wagering requirement is essential for a casino to stay in the business and keep getting new and active gamblers in their platform. We as gamblers will need to understand it from their perspective as well.