I would get a very clear definition from him as to what he interprets as hazing. That sounds sketchy. This person may not be consistent with his definitions. Err on the side of caution and follow all state & campus hazing laws.
Also....nothing can be mandatory? That is kind of bunk. Yes, there should be optional events, but this could lead to a situation where you pledge someone and do not see them until initiation. You really couldn't punish them because all new member meetings were optional.
What kind of member is that?
I would sit down and have a loonngg chat with this guy and other orgs on your campus.