I only hope you are true to all these as my experience tells me that it is not always a sincere format but a means to lure people into signing up through affiliate links for their gains.
You don’t need to trust them on this as you can verify the provided information by yourself.
They list the bonus and the wagering requirement next to it. You can verify the accuracy of these information by reading the bonuses terms on the casino's website.
You have a point, however, you have to know that all those kudos were due to bringing the casinos closer to the interested bettors here, nothing more. At times, it takes a whole lot of effort for gamblers to find the casinos with the conditions that best suit them. It's commendable to bring it directly to the interest people, theirs is to do their further research about it, it's normal.
However, the wagering requirement is not the only factor to determine which is the best bonus offer.
For example, from the list posted above, bodog has a lower wagering requirement than donbet (25x < 30x), but I find the latter more attractive as it has 170% match up to $1000 + 100 fs compared to only 100% match up to $600 + 50 fs for the former.
You are right, but it still depends on the main motive of going for the bonus in the first place.