DESTROY The Pirc with the Fluff Gambit!
Losing the ability to castle isn't so important when the queens aren't on the board.
Sure white has the open f1-a6 diagonal... but black can get that too after moving the e pawn, so that's not so important. More importantly the structure is pretty symmetrical, black has no weak points white can target, and black has a lead in development.
If this were my game, I'd think white has zero compensation, and is simply down a pawn.
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