... I do not know what drives these people, is it better to ask them?

Good advice, even though I think you have suggested the answers to this question. in the other hand, AI checkers can also make mistakes. I once used ChatGPT to translate my posts, and then a mod in this community where I sent my article accused me of using AI. I haven't translated via AI since, luckily not long after that someone introduced me to DeepL. But I also respect users who write in their language, just like you do.

How do you prepare your posts?

Unlike you, I always have drafts, I even have folders where I keep my writing in MS Word (complete with Markdown code) along with the materials (images) that I use in my writing. One folder for each piece of writing and I keep them in chronological order.

^{Yes, I am a bit of a weirdo. 😅😅}

For some articles such as reports, I prepare them over several days because I need to collect data, create the necessary images (including those from the data, i.e. table and chart), and then do the texting (usually I just update most of the text that contains the data). Writings such as book and film reviews also take times because I need to do some literature research on the internet to give more info in my writing than just what I read and see.

I guess amongst the simplest are photographic and #thediarygame posts, but I'm not talented at these kinds of writing.

Everything is very simple for me, if I write a post, it immediately comes from my head, I do not have drafts or preliminary preparations, I use the most accessible and simple language to understand what is written.

It must be good. Maybe I should give me chances to try it your way.