the casino owner has the right to provide any conditions to get the bonus that we will get even though we are forced to play in games that we may not like. we as customers if we want to get certain bonuses must comply with these requirements and we are indeed required to do whatever has been written in the bonus conditions.
if indeed sometimes we are not comfortable with the terms and conditions that must be done it is better not to do that than later to lose a few dollars just to play in a game you don't like.
Yeah, most people do not really understand about the rules of a casino or even changing the rules of a casino as well. Like let's say you get 20% back at some place, and they change it to 10%, that doesn't mean they are a "scam" or something, that just means the business found it too expensive to keep that going and decided they rather cut it down a bit to make it more profitable, which is understandable.
I personally believe that the best thing to do is to either follow a casinos rules if you like it, and if you do not like the rules just leave and go somewhere else. No point in staying at the same place and arguing about the rules the casino itself put in place.
When ever there is such a significant change in the rule, the casino owe it to its community of gamblers to put such changes in a public announcement, atleast, this is what I know that some major platforms do, when ever there is any change in their terms of service /rules, they let their community know that their terms of service/rules have been updated, and the highlight the parts that were adjusted so that those who might not have the time to read the entire terms of service again will easily get themselves in the know of the new update.
There are several casino that keep adjusting their terms of service almost every week, but do not inform their community about it, this is a very suspicious activity and highly unprofessional.