This developer is an idiot.
It's very simple. You can't make people register for no reason just to use an app. (e.g. just to harvest their information.)
Twitter, facebook, evernote, all have account features so they were approved. Apple was crystal clear explaining this.
The poster's muddled logic and inflamatory reaction shows me why Instapaper by Marco is a vastly superior product.
My guess is the author is using a fake controversy to drum up attention for his product. Astroturfing, methinks.