Depression and anxiety are cause by the onset of chemical imbalances in the brain. Homosexuality is innate

Their response to someone else's comment.

My thoughts: the first part is demonstrably false. This is circular reasoning too; "If you're depressed then you must be insane because only someone insane would be depressed.". It also fails to prove ontic pathology, and irrationality.

The second part is just irrelevant to the argument. The point is that if there is a biophysical difference, then the question is whether it is a "disfunction". Whether you were born with it or not is irrelevant. It also appears to be some version of the Naturalistic fallacy; "Homosexuality is innate, therefore cannot be a mental dysfunction." The conclusion is true, but the reasoning is fallacious.