I would argue that the writer knows about what they are trying to achieve: keeping a certain range of ill-informed people afraid of sexual orientation, and then stroking those fears. Words like "become" are consistent with the idea that conservatives believe or advertise the idea that sexual orientation and gender identification are "choices." If these attributes are considered "choices," then fault can be more easily pinned on the people of interest and can call it a "sin." If the attributes are considered a part of the human condition that is ingrained into our biology, then the concept of "sin" is much harder to apply.
Granted, the person is also a total coward for lying and not taking responsibility for it, but that person is definitely on-message.