Uber does extensive leetcode interviews to weed out the best of the best developers just like FAANG. How could such a bad developer have been hired with this process in place and proceed to make such an expensive bad decision?

It’s almost as if gatekeeping the correct developers isn’t working. So yeah somebody should get fired. They screened to prevent this. It wasn’t prevented.

Otherwise admit the screen doesn’t work and fire the gatekeepers who are relying on it and the inverted selection of correct engineers.