why was no1 locked?
Because someone would not accept the word of the boss 
Do site admin or mod have to give an explanation when a thread is locked 
If no, would it be a good idea to introduce such a procedure
Because it effectively just turned into a slanging match, and WE have better things to do with our time than monitor, and edit, behaviour that, frankly, is not acceptable on here.
Hence this one will be locked.
And any others on the subject, will simply be deleted.