There is an explanation in the review why I think that welcome bonuses are important. The thing is that most of the casinos just don't know how to create a deposit bonus that will be both appealing for the players and not too expensive for the business at the same time.
Welcome bonus is easy to abuse on crypto casino, thus only FIAT-KYC casinos that usually offer such bonuses. If you rate welcome bonus as necessary, you favor mandatory KYC as well, which is contradictory to your review.
If welcome bonus he is referring to is a deposit bonus, I doubt people will try to abuse it due to its wagering requirement unless there is no wagering requirement for the deposit bonus but I doubt there is a casino that offers deposit bonus without wagering requirement.
I'm not really sure why gamblingbro seems to be a big fan of deposit bonus while it is basically not something attractive for most gamblers.
@gamblingbro: Casinos do not offer deposit bonus is not because they do not know how to create it but they know that it is not attractive offer.