I don’t buy that for a minute. Anyone can be enticed to have sex with their own gender under the right circumstances. It is plain old temptation.
I was involved in my church’s prison ministry for several years. I visited and befriended women in the Indiana Women’s Prison in Indianapolis. Many of those women went into prison straight but became involved in lesbian relationships while incarcerated. The reason was because they needed comfort and other women were their only option. i.e. “the right circumstances” can also include certain mental and emotional problems stemming from childhood.