That's the point though of the retcon. He is no longer a Robin. Just as they demoted Stephanie Brown from "Robin" status back to Spoiler, and then eventually phased her out entirely, it would appear they are doing the same thing to Tim Drake. These are changes that aren't necessary in a lot of fans eyes. They add nothing to the character. They might not detract anything, but they sure as hell don't add anything either. Are they going to retcon his famous line now about Batman needing a Robin? "Batman will always need a Robin...a Red Robin!" It's just silly.
It may not bother you Nerys, but surely you could see how it could others? Even if we look at it from a sales stand point, I don't see how making Tim Red Robin increases or decreases sales at all.