IMO there is truth in what both you guys state and that the statements of both are not mutually exclusive. Yes, you can get mundane assignments, in those you gotta really muster up the creative juices in order to photograph a store opening that people will stop and view ... and there are assignments like war, which contains such a high level of impact that it is hard not to get an exceptional photo.
While images can be found everywhere (and, BTW it is our jobs as photographers to see and capture them), some things like family vacations with children just doesn't mix well with photography and one has to prioritize family time with photo time.
My take on the Pro label is that I feel that "Pro" designates a level of skill, consistency and quality, and said label is earned. I don't feel that a tax code, financial statement, web site or card is a qualifier for professional status. (I'd like to think the consideration of your peers as a qualifier for "professional" and not a statement by one's accountant.)
Gary