That article wasn’t written using AI. I wrote it in Czech language (it’s my mother tongue); the AI translated it into English for me, but I’ll definitely choose a better translation next time.
Ah that explains why the content is great but the writing style in English is AI.
Skimming through both, the English translation actually seems reasonably faithful, even if a little bit coarse in places. I guess it's a combination of translation and phrasing that some people would associate with AI.