I agree, but then really you're not interested in creating blog content per-se, but in exercising your engineering skills. I think it's important to be honest about that intention both with your audience and yourself when writing articles like this.
+1 for this. I use Posthaven because it's the simplest way for me to publish blog posts plain and simple (and has been for years.)
A lot of devs get excited by the idea of building a blog and not of actually writing the content. You've got to actually have ideas to share and be prepared to put in the time to write posts.
I wouldn't even think about tech before you've got a backlog of at least 2 or 3 posts.