The reason for this is simple....
These people are using a throwaway Alt account, because they want to try to stay anonymous. If you use a older account, people can social engineer the previous posts you made to find out a lot more about you.... "Newbie" accounts does not provide that post history.
They might also be someone that are shitposting their competitors to discredit them, because trust is a big deal when it comes to casinos. There are also just some people that are trolling the forum for their own silly pleasures, so I do not take these posts very seriously.