Lumping in would be saying “all people who defend trans folx have a tendency to defend all trans folx” (even if there is a specific perhaps indefensible individual some people are wanting to “defend” on the mere basis that they are trans) such as you may be doing in this thread [Edit: surely that must part of my misinterpretation fas I initially took the tone of your reply saying how “being trans is not relevant to this person’s behavior” as being in some way in defense of the controversial mystery person’s behavior or online presence, which is not actually what was happening perhaps, and maybe I was too wrapped up in some kind of perverse radicalization narrative that I thought might have been happening as sometimes does with some of those cult followings that can sometimes be widely online, and often exchange with people in bad faith to thrive off of continuations of controversy ]

I saw no EXPLICIT “lumping in”, by either you or chippy in the comments above. they chose to include that descriptor maybe as a subtle way to associate this Chan person with other transitioned people, but I don’t think “lumping in” is the exact words I would think to use in such a statement of (biased, but not universalizing) selection of descriptors

an example how Chippy could have been EXPLICITLY “lumping in” would be if he had just included a word like “another” (xyzfghpqrs [insert negatively stigmatized descriptor here] + trans person) to show that he feels the traits are typically aligned (lumped)

I’m coming at this from the perspective that all stigmas are rooted in fear, short-sighted self-interest, or attachment to a particularly limited scope of ontology used in one’s view of the world or themselves which cannot accept new aspects of the reality they exist in. So imo stigmatizing for example racist people (hardest to defend so good example) does nothing to defeat racism because they are being proven right (that such an issue is worth fighting over) when one tries fighting a person over their racism. It’s like any phobia: exposure therapy can work but shame often pushes people further from owning their own thoughts and behaviors and into safer frameworks or circles where less effort is needed to survive such an ontological (I hope I’m using this word correctly I just learned what it means last week…) restructuring of their sense of self/values/meaning in their mortal life.

and lastly, if you are the one inserting the word “another” to the statement in your own head, then maybe the best place to start working on transphobia would be to ask why you felt the need to insert that slight tweak to the statement, and how such a subversion of someone else’s verbiage might have served your ego or confirmed your worldview in some way, and perhaps why that could be what has happened