From the first link:
"The first thing I need to state, and I want to be very clear, is that Murray is an expert on whiskey. He knows what he is talking about, and he certainly knows more about whiskey than I, or any of my readers do."
I could go on...
The rest is just about how taste is subjective etc, which every drink/food aficionado knows...
Because otherwise, he is a well respected Whisky writer with a long history in the trade, and lots of achievements.