Maybe you’re actually interested in design and typography?
Maybe, but only being able to focus on things that happen to grab your attention/interest is one of the major pain points of having ADHD.
It's not a matter of preferring to work on more interesting things. It's more along the lines of not realizing uninteresting things need to be dealt with (or even exist at all, sometimes) until they bite you in the ass.
Keeping up the theme of starting a blog... you'll have a rational understanding that a blog needs content. But you'll get wrapped up in solving the more interesting design/engineering problems. Once those parts of the project have been sorted out well enough that you are no longer actively solving a problem (note, I didn't say they were completed), something unrelated, but more interesting, will cross your mind and steal your attention away.
(It's not that I'm not suited or capable of doing the writing part of blogging; I make a living ghost writing other people's blog articles and ebooks.)