There is no such thing as a self-splicing ribozyme. Splicing is energy-dependent. The energy from sunlight is required to Create the enzymes that metabolize food and to link the metabolism of food to the physiology of pheromone-controlled reproduction in species from microbes to humans.
In all species, across all kingdoms, gene expression is energy-dependent and microRNA-mediated. Alternative splicings of RNA link biophysically constrained viral latency from the Creation of sunlight to healthy longevity
“The synthesis of RNA in isolated thymus nuclei is ATP dependent.”