I suppose it helps to focus on the core of someone's strength, and the core of the content they are sharing.
You could be a great engineer and a great blogger, but have no skill in making graphics. If you made the artistic choice to add AI-generated art to an excellent engineering blog post, I would forgive it -- assuming it wasn't detracting in some important way.
Overall, the human skill of editing - particularly excluding that which is not additive - does remain key though.
I will say in this case, I don't know the pop song well enough to know if the AI-generated image is super relevant, or just random.
EDIT: I'm guessing it's "Kant"[0] in the image, listening to modern music. Ah... at first I thought it was like, George Washington.
The real problem is that "serious content creators" believe (as far as I can tell anyway) that they must have a cover image to make the article appealing or set the mood or whatever. They might even be right as far as the actually reader is concerned, but either way this is the real disease, and it's decades older than LLMs.
Anyway, it is their piece, their website, so they choose how to structure it. I just don't like the plague of obligatory featured images everywhere in general. I can understand a featured image that adds something relevant, or even simply has some artistic value in itself. But both stock images and AI-generated ones add neither.