It seems to me that if you really love literature, you will find biographical explanations otiose, reductive, distracting. I mean, there are a lot of asthmatics, but not many of them was Lezama Lima. Only one, in fact. There are plenty of Andalusian señoritos, but only one turned out to be Lorca. Life, friends, is boring. Art is interesting.
To Leslie's question on the post below: is there anything special about Vallejo and Lorca that makes them difficult to "unify"? Or is this a more general problem?
I think what grates on me is that this reduction goes against the grain of these authors' work itself, their poetics. It is a way of containing the energy of their work. So, in a general sense, it is a problem with anyone. I think any writer who is a slave to a biographical legend ends up suffering. Sylvia Plath, say. With a writer who deliberately plays with this, like Borges, this should be taken into account as well.
Biographers are even worse than translators. They are vampires trying to suck the life out of literature by reducing it to a biographical symptom. Ian Gibson's bio of Lorca is one of the only ones I own, because, well, I have no choice. But I find Gibson to be a grotesque figure.
There is a lot interesting going on with subjectivity in modernism. It takes two extremes: exalting the subject, or emptying it out. So there's Beckett and Kafka, or Proust and Rilke. I'd like to situate Lorca between Beckett and Rilke, in a way. What's interesting is how these two things happen simultaneously. Vamos a ver.