The claim is pretty clearly intended to be about relative material, not absolute number of pawns: in the end position of the second game, you have three pawns left and Stockfish has two; we usually don’t describe this as Stockfish having given up six pawns. (But I agree that it’s easier to obtain resources from an adversary that values them differently, like if Stockfish is trying to win and you’re trying to capture pawns.)
The claim is pretty clearly intended to be about relative material, not absolute number of pawns: in the end position of the second game, you have three pawns left and Stockfish has two; we usually don’t describe this as Stockfish having given up six pawns. (But I agree that it’s easier to obtain resources from an adversary that values them differently, like if Stockfish is trying to win and you’re trying to capture pawns.)