Books still offer 3-team parlays on free plays and it still ins't +EV. It is simply optimal strategy for getting the most out of the bonus. Correlated parlays requires special skill set known to only some players. The situation here is vastly different:

At Anonibet no matter how square the better is, no matter who it is that is making the deposit, every deposit they make that gets a bonus that +EV. It requires degeneracy / lack of knowledge, foolishness or whatever you want to call it to ruin the EV, but it starts off that the mere action of depositing at Anonibet is a +EV action. That would be if they actually offered what they advertised they do. See the problem?

Edit to add a PS. It feels like we're secret agents using these handles lol. You know the people that made that comment, one you've debated with extensively in the past.