The influencer or the affiliate is just trying to make it good look that you'll be served as if you're a VIP if you sign under their link. Of course, that's a marketing strategy on his/her end while it's a win for the casino.
Whether you win big or small, if the casino has traced something with your activity and account, they're going to halt you and delay your possible withdrawal.
There's no special treatment with that unless you are the actual influencer or ambassador.
that is true, there is no proof about their claim for not having trouble if you signed up using their affiliate link. it may be a promotional tactic for players to use their link. we can never be sure about this as it is an internal concern and we have no way of determining if this is true or not. either way, the better route to practice is read the terms of the site and as much as possible abide their tasks as stipulated in their terms and conditions to avoid issues on the site.
Everything is on your own, most of (Youtuber/Influencer) can give you more bonus because they have some deal between them with casino. The casino provided some promotion with the influencer.
If you register under him, will get some bonus you can't find on other. Meanwhile for withdraw, etc is from your self.
there may be some perks at the beginning, but that's it. afterwards you are all on your own. do remember, they are doing this for their own pockets. so do remember to secure your account by following what's in their terms and don't expect that the influencer would help you in case you got trouble with the site.