-snip-
If you not register yet, then is fine not a problem.
But... If you already register and you want to register new one because of those reason. Could lead, you're chasing some bonus... we don't know the deal between streamer and the casino. Mostly or could be, the casino is also have some deal too for those kind of leaderboard race on streamer.
Duelbits, have some ability to restricted someone who participated in
Leaderboardtheir tournament just because they chasing leaderboard winning and the activity you're do on net profits
even we all know is not illegal.. they can restricted you. What do u things, they're gonna to do. If you said, want to register under someone account to chase leaderboard or participated on those offer. They can think you're bonuses hunter.
You're kinda wrong, sometimes streamer have their own bonuses and is due the partnership between streamer and casino. Either bonus signup, reload or those kind leaderboard stuff things.