Do you need a Ph.D in Fashion to see that the emperor is naked? Do you have to study art for decades before your criticism of it becomes valid? These questions might seem odd, but I hope you understand the underlying message.
Yes, but who gets to decide if the point is valid (ie., it can be defended intelligently), especially if the debate is philosophical in nature?In a debating forum, a valid point stands on its own regardless of who made it or under what circumstances.
Now, the question is, can the point be defended intelligently?