What parts lead you to believe these are words of someone is who about to off themselves? I ask because nothing about the text strikes me as someone who's depressed. It's all a bit absurd, maybe, but I didn't feel sadness.
"she did a feature on individuals who had left society and, in the process, had eliminated every trace of themselves."
"Maybe it's me. I'm a relic which is already out of his time in the present age. Maybe I am what is holding things back, maybe I am already not of any relevance. Good things to consider."
"That's a lot, but I think he could have doone it, even alone, even with tuberculosis. Imagine Kafka's fiendish little face rubbing his hands over that fire! Seems fun. Or he could have hidden it inside an old 32-bit PowerPC. No one's going to look there. Just goes to show that you can't trust people who aren't you. Of course he didn't want them burned. That was just Kafka, writing his own death. The ending has his signature on it. Reality's kind of a medium, maybe greater than paper."