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In the 70s and 80s, lefty guitar was much more rare and expensive than right handed guitar. Many contemporary guitarists at the time who come from working class background like Jimmy Hendrix, Eric Clapton, Billy Corgan, and Elvis Costello are all left-handed but play right handed guitar.
From wikipedia
Blinken was born on April 16, 1962, in Yonkers, New York. His father was Donald M. Blinken, a co-founder of the private equity firm Warburg Pincus who later served as the U.S. ambassador to Hungary. Blinken's uncle, Alan Blinken, served as the U.S. ambassador to Belgium.
Of course
My point is that Blinken was a boomer and when he was learning guitar, presumably in his teens, the 70s and the 80s left-hand guitars are not available and had significant markup. Kurt Cobain in the 90s popularized left handed guitar and now it is fairly common, but people Blinken's age mostly play right handed guitar
And it's a silly point to make -- he could easily have started out on a flipped right-handed guitar, and then switched to a lefty in the past 25 years. Christ, even the one in the photo is just a $500-600 Epiphone, not some jagoff dentist custom shop piece made from endangered tree species. I could have picked up that exact model off of Reverb for under $400 pre-pandemic. I didn't, because I'm not in a jazz band, a baby boomer, or someone who jerks off in the mirror while wearing a Malcolm Young mask (but I repeat myself...), but you get the idea.
There are a lot of good fuckin' reasons to rag on Blinken (like the fact that in that photo, he's playing a Neil Young song that trashes neoliberal imperialist capitalism, in Kyiv, without a fucking hint of irony), but "playing guitar left-handed while being 60 years old is bourgeois, ackshually" is a deeply weird hill to die on.