What else do I need to do to make sure you don't think badly of me?
Nothing. You are doing nothing wrong. Any negative feedback you receive would get sorted in a very similar fashion to the last instance.
Don't worry about what people think, and definitely don't go changing just because someone on the internet thinks you could possibly be infringing on someone's privacy by offering them the chance to answer questions. It's not like you are forcing people into this or combing through post histories to create a profile for individuals against their will.
My advice ignore this feedback. Even the threat of negative doesn't fit with what negative feedback is for. Should you chose to take an unhealthy obsession in Lauda and dedicate your days to trying to find out who they are, it's not against forum rules to seek out information. Are we tagging anyone who researches Satoshi? No.
The worst thing you can do, is change who you are and how you act in an attempt to please everyone.