While I get the recommendation to use 2 inch tires, I think the Ritchey is limited to 43mm.
Another way to manage the pinch flat issue is going tubeless. Our gravel tandem came with tubed 42mm tires. With the 42mm we had pinch flat problems, particularly on rocky fast descents.
We converted to tubeless, and so far no pinch flats or other problems.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.