a system that places value on people’s bodies and minds based on societally constructed ideas of normalcy, intelligence, excellence, and productivity. These constructed ideas are deeply rooted in anti-Blackness, eugenics, colonialism and capitalism.
To paraphrase Lewis, ableism "leads to people and society determining who is valuable and worthy based on a person’s appearance and/or their ability to [...] produce, excel, and 'behave.'" Importantly, you do not have to be disabled to experience ableism.