I don’t know this dude and don’t have a horse in this race, just responding to this in isolation…
Is it so unbelievable? I have no idea what the price of gold is these days but if what I can gather from forum posts these days, it’s relatively cheap. Even a small amount is enough to get you flagged in Blizzard’s system and potentially get a ban down the road somewhere.
If all it takes is one dude with a chip on their shoulder and $5 in their pocket to do this, I absolutely could believe it. Maybe posting on a character you don’t actively play isn’t the worst idea in the world 