That's the majority of everyone's first blog posts ever though. It's nothing wrong with this platform, that's just what people's first blog posts look like.

Most people write 1 blog post, saying they have a blog, and then never write any more. That's fine.

Any new blogging platform is going to first attract users who are new to blogging: everyone who is not new to blogging already has their blog set up, so unless they're particularly unhappy with it there is no reason for them to use a new blogging platform.