Hmmm, I've never tried those beans before, but the roast does look much lighter than I'm used to for espresso. They may make a nice pour over if you're into such things.
I can't say I've ever had to make such radical adjustments to my grinder though, often the new best grind is a few clicks away. I suppose you won't be buying from them again.
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Perhaps he brought for you as a joke.
Hm. That's possible. It is also possible that he bought them for himself, as a standby for emergencies - although he does quite happily drink coffee that I make when I make it - as he is not crazy about coffee and much prefers tea.
However, decaff coffee is something I cannot begin to get my head around. This is because I like caffeine, the more of it the better, sometimes ..