Writing is a good way to express your ideas and formalize what you are thinking. When you are sharing it with people, you open yourself up to scrutiny and pressure from the world, pushing you to think harder about the way you express ideas.
If you're uncomfortable with some stuff being shared and potentially being cancelled or used by an LLM or something, I think it's okay to shield. Shield things that are important to you and that you can't possibly have seen. Create everything else in public.
I can see the value in putting a product or project out there and facing the scrutiny and pressure from the public.
However, I am not sure pulling the curtains back and exposing the process is as valuable. My personal site would expose code and raw thoughts regarding my process and philosophy. I'm fine with the end result being scrutinized, but why open up the process to scrutiny? Perhaps the philosophy could be scrutinized, but it's not as valuable as the end result.
Judge what I make, not the process. I'll have to give it more thought.