Isn't most good cheese unpasteurised? Comte, Roquefort, Gruyere, Epoisses, Parmesan, even many (most?) small-producer Cheddars.
For some unwashed aged cheeses it does truly seem to matter but those the production is so closely tied up with the local agriculture, aging in specific natural conditions etc it's really not a process to try to emulate in your cheddar at your dairy that averages an outbreak every 18 months like the one in the article.
I've tried doing taste comparisons between past/unpast but there's so much variation for even the exact same cheese that I've never been able to detect a meaningful difference.