So a subscriber of the channel sent them an email (see image) regarding these interviews (feel free to verify the email). Asking in a polite and formal manner. He wrote: "i found the interviews very interesting and since some I’ve shared them with have been skeptical is there any proof such as pictures or audio recordings of them taking place?"
Finally, their best response was: "Ultimately, if some armchair internet historian doesn't believe they are real, and some teenage history genius made it all up, that's fine with us. We don't really care. All of the information mentioned in the interviews matches up with historical facts. Some people can't handle the fact that most Germans from the period loved Adolf Hitler and were National Socialists. But if people don't like the interviews, simply don't read them. Move on."
Right... because people would never fabricate things about history ever... So from the official email of mourningtheancient, they themselves cannot provide any type of evidence when asked. Not a single original transcript/audio or any type of evidence that would further verify these interviews. Which means they are completely useless to our investigation.
Based on their response this implies that we are entirely supposed to trust them on the basis of faith and not evidence. This is extremely unprofessional and not how historians address comments to historical documents.