Yes, it is basically like Bitconnect. They try to convince you that this is not the case like saying that you can withdraw your investments at any time. Why would you do that, though? With 25%-30% profit every month you will be rich if you hodl your investment for 2 years. So there is no reason for the investor to withdraw their money in the first place. Even if the investor is in serious financial trouble they will probably not try to withdraw and just get another job.

And I guess there is no example of anybody withdrawing a huge investment I guess. Not sure. I just want to convince you to be super suspicious ;-)