Also a net negative engineer in one setting might not be a net negative in another. Where I used to work we had a senior programmer who never wrote any tests,

Also a net negative engineer in one setting might not be a net negative in another. Where I used to work we had a senior programmer who never wrote any tests, claimed c++ was the best language ever while pushing c++ code with correctness errors, switched to go and wrote an algorithm with stateful variables that couldn't be multithreaded. Yet I'm sure that probably at least a few tines he must have written a few lines code at Facebook that saved them on the order of millions of dollars