As all of us are sinners, are we not allowed to judge anyone?
We all uphold standards that we may not be able to reach ourselves and thank heaven we do. However, in some cases, those in a "teaching" position should quietly go away when they cannot even come close.
kids today have been programmed to not know the difference between an opinion on values or behavior and judgement
Because he has been married three times doesn't mean he doesn't have anything valuable to share on any other issues. If we can only get advice or insight or wisdom from perfect people, we wouldn't have anyone left to do that from. Heck, if he has looked honestly at why his first two marriages failed, he may be the perfect person to get marriage advice from too.