HN is part of that of course.
I wrote my own blog engine in Python (https://github.com/betodealmeida/nefelibata). It generates static pages, but publishes a snippet to Twitter/Mastodon/etc., linking back to the blog post.
People can only comment on the social media sites, and periodically the comments get scraped and appended to the blog post. Here's an example: https://blog.taoetc.org/mastodon_integration/index.html
This way, people can comment in the other venues where they're used to, and comments get persisted past the lifetime of these venues.
Another thing that died is the practice of linking to each other like it's going out of style. These days the majority of backlinks are earned through aggressive SEO techniques, not organically like 10-15 years ago. This penalizes regular blogs in favor of crappy blogs run by SEO experts.
I still believe in blogging and I think that the lesser competition, in a roundabout way, makes it easier to stand out. However, discoverability in Google can be a frustrating process both for readers and publishers.