I can't make any sense of this.
They are over used.
They are needed in every dish.
These two statements are mutually exclusive!
Yeah, his posts are great because of it.
I think that he was moaning because so many recipes call for so many herbs which he thinks is totally pointless. Herbs can add flavour greatly but proportions are so delicate you can easily end up having a dish dominated by one herb.
It's like the whole craze of sprinkling parsley around a dish to make it look fancy, it is commonly done but it isn't required.