The issue is not backup, the issue is that he is publicly and nonchalantly admitting that most of his work for the past years was ai-based, which might or might not constitute fraud given his professional position. Imagine being a student paying thousands over thousands expecting an expert human led instruction just to get this, imagine being a fellow researcher and suddenly being in a situation of not being able to trust this guy's current and past work.

The worst thing is all the people looking at this behaviour as normal and totally acceptable, this is where ai-sloppiness is taking us guys. I hope it's just the ai bros talking in the comments, otherwise we are screwed.