Interesting, the post ownership is created to "Guest". I haven't seen that in years!
I reported the user to theymos and I hope they and their ip gets banned.
IP-bans are pretty useless, and it looks like the user wasn't banned either.
it really looks like they're trying to groom me.
Since you're aware of it, it's easy to ignore. The risk is for children who aren't aware.
That being said: you shouldn't "advertise" online that you're doing illegal things (violating Stake's Terms by underage gambling, whether it's true or not).