This is something I learned back when I was deciding whether or not to self-host my blog. I decided to empirically study productive bloggers who I respected to see what they did and they tended to not self-host their blog, so I followed suit. It worked out well for me! It let me focus on the task of actually blogging instead of managing my blog setup.
These days I still sometimes think about self-hosting my blog (or at least switching to a different hosting platform), but blogger has been okaaaaaaaaaay despite the fact that it's no longer hip these days. So I'm definitely the "old-ass blogger.com site" data point in the above graph.