Many youtubers and friends share their referral codes/affiliate links, saying you will get bonuses, real money, or free spins. but I wonder if casinos give extra help or benefits in some different situations.

For example, when someone wins a big multiplier and multiplies their account by 100x, then some casinos take a long time to process the withdrawal, or they may not even give the money. however, some say that if you sign up using a good affiliate or influencer affiliate code which have huge audience, then you won't face these type issues. also, if you promote the casino using your referral link, they might not hold back your withdrawal because you helped them get new customers.

is this kind of things is considered shady practice, or is it considered fair in the online gambling world?