Firefox for Android has it as well, combined with ublock origin it makes reading long form on a phone pleasant.

https://github.com/user234683/no-js-fixer

It's meant to be used in conjuction with disabling javascript or using js-blockers like uMatrix, however, so I'm not sure if that's your use case (if you're frequently annoyed by ads, popups, auto-play videos, etc, you might want to look into something like uMatrix or uBlock anyway.)

This particular site works without javascript except that the article text is blurred. I might consider making the script just remove blurs completely and fix that type of defect in general, because I can't think of a legitimate use of blur that isn't just unnecessary eye candy.