That's entirely hypocritical of you though. You do realize that, right? Why should you wait to leave feedback for DLC if they've done their job and paid? How is waiting for the buyer to confirm that the code worked by leaving feedback any different than waiting for the buyer to confirm that the item arrived in the condition I said it would? The only difference is sending DLC via email is against eBay rules if you don't actually physically mail them the paper slip (I believe). You're still trying to protect yourself against scammers, but is there any actual evidence digital scammers are any more prevalent than physical item scammers?
I just can't understand being called a "douchebag" for being concerned about transactions completing smoothly. Why do you even care about your feedback as a buyer? Once you cross the threshold of several purchases, there is next to nothing to differentiate you from someone with thousands of positive feedback when it comes to pure purchasing. And you still didn't answer about why you feel the need to punish people who do something like batch feedback. But anyone who knows anything about selling on eBay knows sellers can be made or destroyed by feedback. The entire feedback system is weighted disproportionately against the seller.
It would be more equal if eBay showed information saying "As a buyer, this user has completed X number of transactions. This buyer has been involved in Y number of transactions where they did not pay or opened a case. eBay has found Z number of those cases in favor of the buyer." It should be similar for the seller. "As a seller, this user has completed X number of transactions. This seller has been involved in Y number of cases or seller initiated cancelled transactions. eBay has found Z number of cases in the user's favor." (Which would require the case system to be changed since eBay changed it to auto-open cases for simple questions about delivery issues that often resolve themselves.)
There may not be
evidence digital scammers are more prevalent, but it's easier to scam someone for digital content. You basically have a license to steal on ebay as a buyer for digital content. Sell an Xbox Live subscription card. Buyer uses it, but says it didn't work. They win. Period, end of story. Every time. That is not the case with other items, because you can't return digital items and they are useless when activated. He's covering his ass for a specific circumstance.
Leaving a feedback to a buyer will not in anyway jeopardize your case if the transaction doesn't go smoothly down the road. It doesn't benefit you in anyway. I think most sellers do it to be spiteful. Like most sellers, they probably get a feedback in return 50% of the time at most, and decided to be really petty about it.
"If you don't give me a feedback, you're not getting one."
I just think it's childish. Sometimes you don't get a feedback in return. It happens. Nothing you can really do about it. Not leaving the buyer one, won't get you your feedback.
There are exceptions for delayed feedback, like with mass sellers who sell thousands of items. It can be time consuming. I understand. But if I buy an item from a seller who has, say, 250 feedback, and I buy a game. I get no feedback for paying, and then when I leave them a feedback, I get one in return within the hour. It's just so childish and petty, and overly paranoid. A pet peeve of mine. Is it a huge deal? No, but everyone has small quirky things that annoy them and this is one for me. Just the nature of it.