I don't like this news. From what I know OKex doesn't handle fiat, so they should not necessarily comply rules.
On the other hand, it can be a method to avoid hacks/hackers get use of stolen coins, if the other exchanges also comply.
I think its a move made to limit hackers. I am yet to get what prompted the action from Okex, a humanitarian act to curb hackers or just under some directives of a government. But then, could we witness this in more top exchanges? Only time will tell but generally, it doesn't look too God for cryptocurrency because we are all obviously heading to centralization