I am talking from “podcast substack knowledge” Please add/ correct me.
If there was a bug with core that was unnoticed for multiple updates (yes 6 plus cause bitcoiners are cautious) it could be exploited. Rendering the node incapable. Leaving only knots running nodes to broadcast transactions
There are a ton of versions of core out there running. Not every node is running the newest implementation. The chances are slim to none and the event you speak of knots would likely have the same bug. It's very similar with some filters applied that could just as easily be applied in your core settings.
