I don’t have a horse in this race, but ....
I like this forum because, for the most part, it allows enthusiasts to share their opinions about gear without ulterior motives. Of course, dealers are also audiophiles and have every right to participate. But if you’re going to mention a product which you happen to sell, then it’s ethical to also state your affiliation upfront. If anything it will enhance the dealer’s credibility.
Carry on please.