You are def right that I should not pack everything in a non-tech cluster and call it crap. However I'd still keep my initial statement, it's a simplicatiom but it's true.

Of course there are and must be great blogs in non-tech areas but they are not that many. Writing high quality blogs for free seems not be common in other fields. Often people rather publish the findings in a protected space, call it academic paper and I can read just a lousy abstract. Actually most academic non-tech fields fall in this category.