It's not a serious question, it's a self righteous rhetorical question.
I'd be happy to forward your suggestions to them - they'd appreciate being able to visit their parents every once in a while without being subjected to a firehose of crazy.
Yesterday's flavor of that unsolicited firehose was "They called those four states for Trump, and Biden is at 215 now."
It seems you are grossly mischaracterising people of a certain political orientation which brings me to think that maybe you never really attempted real contact and/or you didn’t try hard.
Some of those conspiracies you mentioned don’t even have any link with any specific position on the political spectrum e.g. here in Sydney some politically progressive suburbs are amongst those with the lowest vaccination rates and as you probably know this is also true in many other large cities across the world https://www.smh.com.au/healthcare/rich-suburbs-have-low-immu...
They describe it like losing a family member to a drug addiction, or a cult. Quality time with their own family is no longer a thing that can happen, because how dare the children suggest that basic pandemic precautions be taken, or even think of supporting the vast pedophilic democratic conspiracy.
Pray tell, how should they bridge that chasm? This is a serious question.
It's well and good and morally smug to suggest that the problem is that 'you don't spend enough time talking to people holding insane beliefs'. The problem is that you can't use reason or empathy to get someone out of a position they didn't reason themselves into.