I allow 1st party scripts by default, so I didn't see that error in their page. I had to allow scripts from a 3rd party CDN to read the text.
I don't think I'm a kook, but anytime I have to go into uMatrix more than twice I reconsider reading the article at all. That doesn't apply to this particular article, but it happens more often than I am comfortable with.
I'm more conservative since I don't really see how the lack of scripting prevents them from dumping the content and it works OK normally, but here it's just an empty page with the said "error" message and a single <script> element downloading a JS file which is quite unacceptable. This is ridiculous, really.
I don't think I'm a kook, but anytime I have to go into uMatrix more than twice I reconsider reading the article at all. That doesn't apply to this particular article, but it happens more often than I am comfortable with.