Exactly. We are in total agreement. The argument, most posters here, and the parent who I responded to disagrees with us. They're wrong and you and I are right.
If your business gets to use your labor for "free" just because you happen to be a 100% owner, it is no different from Facebook getting to use employee's at 30% of market rates because, collectively, they own 6% of the company. It's exactly the same thing.
The article and people who defend it are very wrong. You're right.