The real issue on these boards is to keep them on topic - related to the company being discussed, pro or con. That means that the executives who run the company are fair game for discussion and people are free to express their opinions of them.
However, as you said, attacking other posters is off topic and distracts from the real issues about the company. That's why iHub does not allow it on the stock boards.
Anyone who wants to engage in personal attacks can go to the RB cesspool or even to the iHub parking lot board. Posters on agora are also free to attack people as long as those people aren't pro EDIG.
iHub isn't perfect, but it's by far the most balanced and civil of the EDIG message boards.
FWIW, I do not believe that FF and RP post on these boards, but I believe they read them religiously.