As has been said, he’s bought on here and sold somewhere else, so not used the forum to “trade”.
As for calling traders “trash”, that’s a pretty offensive and harsh turn of phrase. All of us in one way or another sell our products, labour or services for monetary gain. A trader’s profit, much like a retailer, also has to allow for some contingency in case of things going wrong.
For what it’s worth, I am good friends with a very, very good trader (Ross Readman of Ross’ Rideas) who makes a decent profit but also does a bloody good job of selling bikes to people at decent prices and with very good service. You only have to see his FB page to realise that. He’s able to do what he does by having good cash reserves built up from trading over time, so that he can negotiate good prices with sellers, and then make a profit for himself while still offering a good price to buyers. If that’s how you define “trash” then I’m lost……..