Isn't it obvious?
Using a debugger implies that you expect the code you write to have bugs. Not a mindset I'd like my coworkers to have.
Using a debugger implies that you expect the code you write to have bugs. Not a mindset I'd like my coworkers to have.
A much worse mindset is to be arrogant enough to assume the code has no bugs.
As a matter of principle every code has bugs. Some bugs are found, some not.
Steer well clear of these people!
If I get around to it I'll eventually write a book about this technique.