https://arxiv.org/ftp/arxiv/papers/1910/1910.05224.pdf talks at length about it -- the result is known to be wildly invalid for gas giants, as they have the temperatures and pressures to have viable chemical pathways to phosphene.
Yeah - the argument in the paper is a lot more nuanced than it's being represented in the media, where it's being flattened to the point of uselessness.
