Noting the Eeyore's Requiem reference, yes, very similar. My notes on that drink state I used Luxardo Bitter Bianco, and enjoyed it. I had Cocchi Americano for this and I think I enjoyed it more. The result is surprising for its melange of ingredients. Fortunate measures.
3 parts dry vermouth to 1 part 1:1/50°Brix simple (or other syrup) is akin to blanc vermouth in sugar content. Yes, this combination is more bitter than a Negroni, but dropping the sugar content will only make that aspect more intense.
Isn't this essentially Eeyore's Requiem from Toby Maloney at the Violet Hour? This one has an extra 1/4 oz of Cynar but otherwise reads like the page in 2011's Beta Cocktails.