Yep, he’s basically saying don’t allow posting of active Ebay auctions. Not gonna happen though. It is simply not something that can be enforced on the basis alone that the seller is entitled to post a link to their item in the marketplace forum if they choose.
and at the end of the day, the only reason he wants this is so it’s less likely a fellow hardcore collector will snap an item up (ahead of the complainer) At the end of the day it’s just the way it is on Ebay.