To begin with, `chmod`-ing stuff in system directories is already an interesting topic ("do it only if you know what you are doing")
--> On top of that, I would take it for a hint that the person couldn't even write the command properly.
--> That speaks for their expertise, and indicates for me, how much trust I should put into that answer.
--> (zero)
--> In theory, one could use it though for further web searches, to confirm the premise via other sources...