Yes you are right that is why while using a gambling site it is that important to carefully read their terms and condition before using them and not being enticed by bonuses or whatsoever that may comes from the casino. Most times these are the angles that casinos doesn't like to reveal so that they would use that point to regular fished out those who are actually cheating or abusing their platform for self gain and interest.
There are two many ways to explore very basic but vital terms in a platform, through Terms of Service (ToS), and FAQs. You don't need to read all texts written in ToS, and can simply search with key words in ToS and FAQs. For most important information that is vital for users with their accounts and money, they can quickly find in FAQs, and if not through searching in ToS.
If they are more careful, they can do a third step, asking for guidance and support from Customer support in email or chat, then confirming given information in ToS.
Nothing still changes over the time, and yes if that gambler is that too lazy to read ToS they may use the FAQs to get what they wants at their finger tips which would only guide them while gambling. And of course isn't that easy to read whole thing but would be important to first be informed of most their likely and not so that they can abstain themselves from being attached any violation.