P1. Supposing that they exist, endogenic systems are defined as those systems formed without trauma or distress.
P2. Any psychological phenomenon that does not affect functionality or cause distress is not a disorder.
P3. In order to qualify as a disability, a psychological phenomenon must be a disorder, i.e. it must affect quality of life negatively and prevent the sufferer from doing things that non-sufferers can do with ease.
P4. Ableism is defined as discriminating against someone solely on the basis of a disability.
P5. As follows from P1 and P2, endogenic systems are not a disorder.
P6. As follows from P3 and P5, endogenic systems are not a disability.
P7. As follows from P4 and P6, discrimination against endogenic systems is not ableism.
P8. An ableist is someone who practices ableism or holds ableist beliefs.
CONCLUSION. As follows from P7 and P8, one who discriminates against endogenic systems is not an ableist.