My Doctor friends would disagree about it not being "wholly relevant", as it took them over three times the time he spent studying to become fully qualified…
Also, the fact that it was nearly 40 years ago, and he’s never used it since, not sure how relevant his "knowledge" is - 40 years ago I could speak Russian and knew the location, size, and capabilities of most of the Soviet Armed Forces in Europe; now, not so much…
He’s really not more qualified than "Karen"…