YES.

I run a tech blog, mainly about coding and the industry (links in my profile), and it did help me to secure speaking gigs (mainly repurposing popular blog posts into talks), as well as attracted job offers and valuable connections who liked my posts.

I don't promote it much except cross posting to all the short form social networks (x/twitter, mastodon, bsky) and to LinkedIn with some longer "bait" type of content.