It's not journalism though is it, it's just someone's blog where they can tell any story they want, as has been the entire history of story telling. With that out of the way the rest of your post is just flanneling.
There’s a motte and bailey thing going on with this type of rationalist writing where someone writes authoritatively on broad subjects and then when anyone starts responding to it they immediately repeats to “it’s just a blog” to forgive all of the problems with it.
certainly there is no organized journalistic outfit behind it, but also, a lot of legit journalists want their substacks to be taken as facts of record.