This article [1] shows a “URL was blocked by a content blocker” error on iOS with Purify [2] enabled. When disabled, the article loads.
[1] https://www.wsj.com/articles/intel-erases-reference-to-chinas-xinjiang-after-social-media-backlash-11641808676?mod=mhp
[2] https://apps.apple.com/us/app/purify-block-ads-and-tracking/id1030156203