Ask HN: Anti-ad-blocker makes Safari “reader view” gibberish?

I have an ad blocker on my phone. Sometimes the reader view will allow me to see content despite a news site demanding that I disable my ad blocker to read it.

However, this article just shows gibberish. Is this a new method or am I just running into it for the first time? And how do they do it? Is the content “encrypted” somehow and then fixed in javascript or something?

https://www.twincities.com/2020/07/01/protesters-close-westbound-i-94-in-st-paul/