I agree that it's important to look at the whole package that particular casino offers and choose the best options. Although, there is not much difference, it's just the nuances that differs.
Often referral stuff takes too much effort and too much time for very little result and that is just another feature to attract players but you can't count that you will benefit much from it. Gamblers who think that referral bonuses are something they can make money or are very wrong. You should just focus on playing.
Actually not really, because some gamblers really know how to use the referral link, so they can invite many people to join via their referral link. Those who know how can make money from affiliate links but for others who don't know, it will be difficult because they have to try to find them through trials one by one until they find one that suits them. This is why not many people are successful in making money on affiliate links and end up giving up on continuing their search. They also don't need to play much, especially if they are used to using affiliate links, because they focus on getting more people to join through their affiliate links.