I’ve tried basically everything under the sun with ly parents and family. Including variations of this.
It doesn’t work.
If someone is as set in their ways and conspiracies and worldview. There’s no getting them out if it, if they don’t already want to. They just come up with whatever counterargument or idea that makes sense to them or supports them. Real or imagined. Facts and reality literally don’t matter.
About the only thing left I’m gonna end up trying to do is to effectively give them a form of ideological shock, which may end up just shattering their worldview. Not exactly intentional, mind you, but just by living my own life. Maybe having their child be something they’re supposed to hate will shake up their foundational beliefs enough to question things.