~snip~
I will do it as soon as possible, because you know the casino can refuse to pay its obligations when I win big on the grounds that I have not completed the KYC process / the KYC process I submitted was rejected for some reason they made up. I don't want something bad like that to happen to me just because of my carelessness in not paying attention to things like that. And because of this I play at casinos that enforce KYC regulations before deposit, at least the KYC thing has been completed before I deposit on the platform.
I think there is a bit of a tradeoff there.
So, if the website is well known, and I can clearly see that everything is fine and people use it and they're happy, then yes, I would do KYC as soon as possible.
But, on the other hand, I don't want to do KYC in a shitty website that ends up selling my information, or I actually don't end up using it.