Your blog post is not a novel. You have one, maybe two, sentences to grab a reader's attention.
A blog reader is not in it for the long haul. They don't want a clearly developed thesis that is developed from approaching the topic from multiple angles. They want one point. One interesting point.
If you want to develop that point, use multiple blog posts. But pretty much everything you want to say should be covered in the first two sentences. You want to pull them in and get them to read the rest of the post.
The internet is not the same thing as a newspaper or book. It's extremely fast paced and subjects change with the click of a button. So catering to that type of audience does not diminish your skill as a writer. It's merely accepting who will be reading your blog and what type of mood they are in.