To have a "standpoint" means to be able to not only experience the harms of a social or political system, but to recognize the ways in which that system interacts with one's identity. While "lived experience" can be personal and reasonably unreflective, standpoint epistemology is a position of knowing "earned" through intentional analysis.
That is, they understand the purpose of chatbots and generative models to be the ability to force other people to see a particular version of reality. It is a tool of power that masquerades as a tool of knowledge.