I completely understand that no one wants to give money for free. Perhaps I am more used to other kind of bonuses. For example on bitcasino when you won in competition, you have to wager that amount 1x. But here if I deposit a hundred, to be able to get another two for free I had to wager 2500 with 100. Perhaps I am not a very experienced player, but that seems rather impossible to me. I had to make a win streak of 25 all-ins in table games, or spend a lot of time at slots. This looks more like a competition, then a welcome bonus.
I understand, sometimes you may face things that you are not familiar with, competitions to wager and be at the top etc etc could be a bit different. However, in almost all cases of rollover and deposit bonus, there is either 40x or something similar, meaning if you deposit 100 bucks, then you need to wager 4k in order to get the bonus in your account.
It is not really that impossible, we are talking about wagering amount here, meaning you just need to wager and win. Even if you do like 90% chance to win, just for 25 times, there is a good chance you could end up winning it all, not saying you will, but that is the easy part of getting the bonus.