I think that personal confirmation of an email sent is a way to prevent fraudulent account creation. I don't see anything suspicious about it, and when it comes to confirming your identity, it only happens once, so we really only waste a minute at a time. I don't think it's a big sacrifice and in return we have a safer game.
It's not about personal confirmation but only confirmation of registration to make sure your email is correct and has access in case of problems such as forgetting your password or other things. @pieppiep asking about this out of concern if there is a problem like I said and it was the right move, Gamdom won't carelessly ignore this one.