Yep, the picture of trust builds up with some check-ups both on the forum and other platforms, and only afterward can the decision be made, you are right.
Temptation from different promotions shouldn't be the key factor

Verify everything and this is something that you must do specially when you are really that dealing up with sites which do involves money or simply making deposit.
You are the ones who would really be that responsible with your actions and if you wont really be that careful then you are really that putting up yourself on such big trouble.
Just read up peoples feedbacks and opinions as these things are really that important so that you would be wary at least on what are the things that happening around.
I think most people doesn't bother to look upon the whole TOS thing or even the most basic rules and regulations in using such service, especially in a casinos. Because, honestly, most people are too lazy to read these lengthy guidelines lol.
What most people do is just rely on feedbacks found in the internet or in the social media. It's maybe rare to see negative feedbacks, but most of the time, a person's judgement will base on the numbers of positive feedbacks against the negative ones or the other way around.
This same reason why, even at this modern year, there are still people who got scammed because of their poor judgement and laziness in doing the extra research to secure their funds.
I support you, most people nowadays don't read into fine print, and that leads to consequences. Sometimes - not so dire, otherwise - very, very badly
You should always check what you can do yourself.