While I agree that blogging isn't dead, I think that blogging serves another purpose as well. It's a great way to solidify understandings about certain topics.

I have a substack on programming and technology, and when I'm working on something I know I will write about, I definitely understand it better. I think it fulfills the same purpose as learning through teaching.

And it's also just extremely fulfilling. Writing about a niche part of a field you are interested in and wished had more spotlight is satisfying, even if no one reads what you wrote. Or at least that's how I feel about it.