At every conference I've attended, I remove or flip my badge immediately after entering. I've never felt that this impacted my ability to meet new people and connect with them, so I don't accept the author's assertion that it's necessary (or even helpful) to make new connections. The remainder of the rules are predicated on rule 1, which I think leaves them irrelevant.
I'd go so far as to say that if a conference tries to enforce rules 1 and 7 (everyone has to wear a badge and no flipping), then I will simply decline to attend. The only badge that I'd be happy to wear continuously is a badge with no legible PII that's used purely for access control, and even then, most of the time, conferences don't require that kind of access control.