He's been doing this same art style for many years, certainly before LLMs were launched.

His Pepper & Carrot series started in 2014, all freely released under a Creative Commons license, by the way:

https://en.wikipedia.org/wiki/Pepper%26Carrot

The same happens to people who write a lot and pay attention to their style, such as this gentleman. The way LLMs generate text is strongly influenced by what used to be considered a high-effort eloquent style. Varied sentence lengths, triplets, typographically correct punctuation, yada yada yada. Until recently, that stuff used to be the hallmark of professional writers (and Kenyans, apparently).

What were LLMs trained on? Professional writing, first and foremost. Books, scientific papers, op-eds, blog posts. So by default they take a polite, professional tone with all the flourishes and best practices that previously used to be de rigueur for authors and the like. So now what happens when someone used to "proper" writing writes something?

Everyone thinks it's AI slop because that's how LLMs talk. High effort now looks like low effort. And because tech bros immediately went on to develop "humanizing" tech, any other style will soon also look like low effort. And the same is true for art: Being able to produce highly detailed pictures with spectacular colors and shadows went from something impressive to evidence that you're just a random jackass with a ChatGPT subscription.

You can't really win anymore. Anything short of a live performance or a feature-length movie could feasibly have been generated by a fully automated content mill. That really sucks if you want to engage in creative expression of any kind and doubly so if you once thought you could make a living off of that.

It seems like it has way too stable continuity between different panels to be AI generated.