Hacker News Reader

pretty neat. what would be the best way for me to block this

Probably disabling JavaScript. That worked for me.

Would also recommend you file a bug at https://bugreport.apple.com.

This is linked directly to their internal bug tracker (Radar) so I can assure you it will be read and triaged by an engineering or product manager.

And you might even get a message "Closed as duplicate" three months later...