Image, as in what people think of when they hear a word.
When you hear ‘terrorist’ you don’t get an image of a little old lady knotting bombs at MU.
Those discussing on here may well know about fake trans, or trans who are acting as their authentic selves or trans who do no harm. They may well be, or know trans who would pass as women or as men, but, if you ask in an average group of people you don’t really know, what they know about trans, the conversation is usually about TW and topped with mentions of males in female prisons, cheats in sport, rapists who have said they’re female, Eddie Izzard and males in female changing rooms.
This isn’t because of trans who have been living unobtrusively. Most people don’t even know they exist. It’s because of the publicity caused by the trans who cheat, rape, demand the right to be in female spaces etc, together with the publicity round the TRA who attack females like JKR or females holding peaceful rallies to support female rights.
It isn’t fair on all innocent trans, but for many, the impact of people’s perception of trans has been affected by the cheating and lying and violent actions and the support of those actions instead of the condemnation of those actions.