Is that what "Tears in Rain" refers to?

Been a long time since I've seen Blade Runner, but I thought the monologue just serves to show that the android is reflecting on what death means, in his case the irrevocable loss of his consciousness, memories, thoughts.

Yes, an analogy for inner experiences that could never fully be communicated to others.

Like seeing C-beams glittering off the Tannhauser Gate, or flying around the Bay Area in an F/A 18 Interceptor on an Amiga.

Tears in the rain comes from the first Blade Runner movie when at the end the android is dying from expiration while outside in the rain while explaining things he had seen as a slave that were beyond human imagination.