I think the friction part is very relevant. I am disturbed when I see people make issues they have with pricing, shipping times, responding to correspondence, etc. etc. with other members and cottage industries a public event.
While their concerns are legitimate, they and the person with whom they have issue own the concern, not the entire forum. Little is accomplished, and too often circumstances that are important are unknown or misrepresented when shared publicly.
I like the policy and support it. The mods have done a good job. I really don't want to have folks running around the internet finding the best deal for me when a stove, hammock, or such pops up for sale on this forum. Something sold is of value for the seller and a potential problem solved for the buyer. The value of that transaction is determined by the two of them.
The World is my country, all mankind are my brethren, and to do good is my religion.