That doesn't make sense as a counter argument. Dissuading someone from trying to cross you up is where player skill begins to seperate. Blocking is the default response, he's specifically seeking options other then that.
No one implied you do it constantly but simply to let your opponent know you are able to do it. With that, they second guess their approach which then opens up another meta. Anything to stall your opponent is good, sometimes just blocking is fine when you aren't ready to counter but all the time? No.