Before accepting the term of service of the casino we must first of all be willing to hand out our documents for verifications because this is the most important stage that always gets gamblers stock at some point if they don't understand what really is happening.
Maybe that only applies to big gamblers so far, as a small gambler, I don't need to send any identification, just do level 1 verification, filling in the information data is more than enough, I can still withdraw money without having to be asked to send documentation for level 2, every KYC there is always a level. That's why gamblers who have a lot of money should read the rules first before making a large deposit.
Most times, people do underestimate the power of terms and conditions and in most cases, people don’t bother to read the terms and conditions of a casino because most times that very section is always very long and gamblers just skip and assume all is well and just with the cases of signature campaigns where a manager and the campaign term has the right to adjust their terms at any time, same also applies to most of this casinos because they also make it clear in their terms of services that they have the right to adjust their terms and conditions at any time and I agree with @piebeyb that small gamblers shouldn’t at Sime times be bothered with T&C but the moment your stakes are getting above your limit, then it should be a time to revisit the T&C to avoid issues later on.
Underestimating the power of the terms and conditions of a casino is the beginning of frustration for the gambler after you have been asked to go through with some key demands on the casino such as KYC, most times, casinos have many of the things that gamblers complain about when they encounter challenges all outlined and explained on their terms of service.
But the inability of some gamblers to take the time to read through and understand what the terms of service are with the casino and what are they do or don't while playing there, failure to do so will amount to problems for the gamblers.