I think, charitably, what might have happened here is:
1. Author left out the diagnostic step that restoring the connectivity didn't fix the robot, because it didn't work.
2. Author did the technical analysis mentioned (there is a repository attached. I haven't verified that it actually has the level of technical analysis indicated).
3. Author took some creative liberties (possibly involving some AI-assisted punching-up) when writing the blog post story to make it more compelling in a way that made it feel a bit off and left me and others questioning its veracity.
Skimming the post and skipping past the fluff, I thought it was an interesting situation and bit of debugging.
The post really makes it unclear how permanent the disablement was, or how exactly "one script had been modified to prevent the main application from launching". Would really love to see some details here. Could author undo that change? Did they try to?