Is this in reference to the book called The Selfish Gene?

The original article: https://doi.org/10.1073/pnas.2414761122

As usual, the university press office distorts and over extrapolates what the paper actually accomplished.

Still cool though. This work traces back the types of transposons responsible for creating introns and identifies at least 8 (?) cases of horizontal transfer.

The medical implications are nought. We already know about the presence of introns and how variants in introns can sometimes cause disease by misdirecting splicing.