Great video Christian and Katja! So many people benefit from your sharing on youtube as well as FB.
I have no idea why anybody would criticize your contributions in the exJW world. But for a certainty, it has nothing to do with you. When people lash out it's all about their own issues that they can't be bothered to work on. It makes them feel superior to put others down, when in reality, it is their own insecurity that is showing.
Keep it up guys! You are doing great!