The argument is based on how some people react when a newbie asks something or comments on a certain topic. it is true that when someone is new, he/she will not be familiar with the new forum and end up either doing something against the rules or asking the obvious. The only problem comes in when a person creates an account and starts soliciting for money or promoting sites or services that are meant to scam people. That is why no one will ever issue a loan to a new. Similarly, a site involving promotion that has been created by a newbie cannot also be trusted. So, TRUST is the key issue here.