In context the parent asked why you would need a full cold boot outside of the Restart command. The Restart option does a "full shutdown, followed by a cold boot". There is no need to throw command line flags around, at least not in the scenario you gave.
No he didn't, he just said "Really? Can you explain why you would need to do a full cold boot?". The grandparent was talking about the command line flags as an alternative, but neither my post nor the one I replied to were specifically referring to doing it from the command line.
