I think you are misunderstanding my point, I will attempt to explain it more clearly. I am not trying to argue with you that the definition of outfit has changed, that is true. At the time, Outfit meant both your outfit card (such "108 Righteous Bandits", "Beyond the Veil", etc.) and the faction to which your outfit belongs (the icon, eg Anarchist and First Peoples in the current terminology). Now outfit just means the physical outfit card, and the icon is a faction icon. We can agree on that.
Cards that referenced your outfit have always referred to your outfit card, and some of them looked on that outfit card for an outfit symbol. It was pretty interchangeable at the time, but the difference is there, as evidenced by the confusion and the change from outfit symbol to faction symbol. For reference, look at other cards that reference your outfit (Quarantine Tent, Constance Daughtry, Ambrose Douglas, etc.) They are referring to the outfit card, not the outfit symbol. Even before the faction change, I'm fairly certain the rulebook (at least the PBE one, maybe not the AEG one) said "There are other cards that will reference your “outfit” as well, which will be referencing your outfit as a card" just like it does now.
These cards work exactly the same way now, but when they reference your outfit card they are looking for a "faction" symbol rather than an "outfit" symbol. This is one of the reasons that the change was made and is a good change, is because of things like this. Changing "outfit" to mean just the card and not the symbol, and using "faction" to refer to the symbol, doesn't have any impact on card text or mechanics it just makes things more clear. "If your outfit is X" looks on your outfit card to see if it has quality X, which in the case of your question is a faction symbol, the artist formerly known as outfit symbol. It could just as easily be "If your outfit is a Holy Ground" or "If your outfit has 3 production", and would work exactly the same way.
Apologies if I am over-explaining.