Nobody claimed these things. You're taking these innocuous, uncontroversial statements and using hyperbole to blow them out of proportion.
Haggerty isn't unique, but they don't have a pinch hitter, runner, or fielder of the same quality to add to the roster, let alone a player with all 3 of those qualities. Trammell can field fairly well, but is a below average runner and awful hitter.
Games are closer in the playoffs and benches are used more often than in the regular season. The loss of a key bench piece that fills multiple roles is more likely to hurt them now than it would have in April. To what degree I'll leave that for others to decide.
Note that none of this is even remotely untrue or controversial, but your response will contend that I claimed he's a 9 WAR player or something. There was really no reason to even discuss this beyond 'oh hey, a good player was hurt and now the Blue Jay's have a better chance of winning'.