This does sound like a pretty attractive offer, especially considering your extensive experience in sports betting and the substantial profit sharing offered. However, to be honest, I'm personally not interested in participating. The reason is simple: it's still too risky, especially regarding my personal data and the security of my casino account. I feel more comfortable with my account being used solely by myself, thus avoiding potential problems later on. So, while the offer seems tempting, I've chosen not to participate.
Thank you for the offer.
Indeed it is risky, and you could be risking your other accounts and future accounts as well.
It has been revealed by SirJohnVonSlotty (he's been in the gamba business for years), that user-data are grouped and thus used to determine suspicious activities. You could end up having a bad track record by lending it to some internet stranger.
So if 1000 casinos have the same platform provider (SoftSwiss), the platform provider checks the players on a group level, with group level data, and then flags them. With that we can spot a money launderer even before he deposits on our casino, because he has a track record on other casinos.
If it's too good to be true, it probably is.