Earlier quoted context omitted.
Couldn't you just search for "Microsoft"+"watch"+"Parkinson's" and spend, let's say, two minutes selecting a "just the facts" article? You probably spent those two minutes writing your post.
I spent about 10 minutes writing my post and it was very cathartic. The article is teasing the reader. It could have easily explained the basics of the device in one or two sentences at the top. The two main questions the reader has are "Does this work?" and "How does this work?" The writer is just being cute by not getting those answers out of the way.
That said, there's a key difference between "This style of writing is very frustrating." and "I find this style of writing very frustrating." From reading other comments in this thread, the story appealed to them. What comes across to you as "the writer … just being cute" is engaging writing to others. As currently written, your critical analysis of why you find the journalistic style frustrating comes off as a rant, which doesn't contribute constructively to discussion on HN.