First of all, you can make the point more objectively and abstractly -- e.g. you can say that someone bidding blind on an expensive record without reading the description and then just withdrawing the bid is offensive. You don't have to make it personal, which is clearly what this is, with the cussing and direct snipes. You can mention Phil and his actions but he's being addressed pretty personally and in an attacking way.
Second of all, I think there is a big focus on the cost of record and the linking of it to someone's status on the scene all the time here. It might be less explicit, but I feel it's pretty pervasive -- e.g. who can afford the expensive records required of an "OVO" DJ, if they want to play the currently in demand records? Your singling out of Phil's attitude here I think really hides this fact.
Anyways, I don't want to censor your opinion about Phil's actions, but you don't have to put your opinion in the form of a direct personal attack.