Text is random-access, searchable, and respects the reader's time (I can skim a blog post in 2 minutes to find the one command I need). Video is linear and demands a fixed time commitment.
It is somewhat tragic that the format which is often technically superior for documentation and reference (text) relies on the format that is optimized for engagement/retention (video) to subsidize it. Kudos to you for maintaining the blog-first workflow despite the incentives pulling the other way.