for an affiliate all that is not something in vain. those who become affiliates in one of the casinos usually have a large following and earn good trust from their followers. so that when someone shares a referral link and he has a lot of followers, of course his followers will also believe and try to register and deposit using the referrals that are shared, usually this happens to streamers who have a lot of followers. so they don't just waste time and definitely get income from the referrals that he shares.
for ordinary people like us who are trying to spread our own referrals from one of the casinos, we can also get satisfying results not just wasting time. I mean when you share a referral link, you have to be smart in terms of promotion or advertising the casino and include your referral link. so that people who see your advertisements or promotional words, they will be interested and register using your referrals and start gambling.
so the conclusion is futile or not, it depends on how they spread their own referrals to the public.
regarding claiming how long, I usually claim instant, it quickly enters my main fund, it doesn't take long.