Right, and your question will probably be deleted within 24 hours for exposing their incompetent nonsense. Really and truly though, I don't see anything wrong with people knowing you blocked them. If you blocked them, then why not be bold about it? You only want to block someone if it can be secret? You only like the idea of blocking someone if they don't know and you can still hypocritically, unfairly participate in their activity yet they are banned from yours? Hmmm that doesn't sound like it makes very much sense at all.
What I find annoying about that new feature is that I block someone, it's me saying "I'm choosing to make sure you have nothing to do with me. I don't want you participating on my activity. I don't care to hear your opinions and insight. I don't want you involved in my business." This new feature forces you to involve them in your business and you can't even comment on their answer to defend or explain if they say something that's rude or offensive. But I guess this is GAG's way of dealing with people who unfairly block others yet still try to participate on their activity so kudos to them for handling that