Seems like all of those points about the landscape are exactly why you'd want to work on a personal blog. You can write something that's representative of you.

As for the how: same as always, I think. Write content because you want to do it, then share it through places where you know potential readers are (HN, Bluesky, your friends, etc)

I know that people are also using Substack and similar platforms as they can help with both distribution and marketing, but I know less about that.

Molly White has written about why one should blog, but I can't find the exact piece of writing, so here's a podcast with her instead: https://about.flipboard.com/inside-flipboard/molly-white/