You're so self-righteous, you're plowing through stuff without reading what you're responding to. This isn't what you said before, and even your clarification makes no sense in context.
It doesn't work, anyway. If you can't build the shelf yourself, what compels the carpenter to make it to your specifications? Even if you paid him? Nothing.
The trouble is, you insist on framing this in terms of the carpenter's rights. It's an impoverished view. No one else is looking at it that way, no one is disputing his rights.