I think it's fairly logical such a title was chosen. Without the ability to determine exact nature of their relationship, this choice - conforming to modern heteronormativity, evoking emotions and sympathy for "the lovers" sharing an embrace at their last dying moments - makes most sense given the largest potential target group for news of this discovery are heterosexual adults.

The given title is most certainly the only reason why a huge percentage of people ever heard of Teppe Hasanlu archeological site.