Given the way you're framing this no, it's not worth it for you to blog. Using words like "shipping","low-signal", "networking". And odd ideas like blog posts having to "work" and provide some tangible gain. These are for-profit concepts so I assume you want to do this to make money or meet people to allow you to make money.

There is no money in blogs if there ever was. The money moved away to social media a long time ago. Leave the blogs to human people talking to each other and showing off their gardens and pets and hobbies.