For a while there I used to have a regular rotation of folks that would end up on my couch sharing their thoughts and troubles, mostly troubles. Was always slightly perplexed by it, had nothing to offer but my ear but I guess that was all they really needed anyways.
I don't share much with people but it seems many people want to and, as you say, an open ear is often all they need.
It always left me slightly baffled, always had the impression that people showed up at my place when they were out of other options. Lol, I have great respect for your adherence to opsec, aside from a photo of your nephew wearing an Australian trucking company t-shirt I don't think I've seen you post anything that shared more than exactly what you intended.
They turn up at your door because they know they'll get and that they'll find value in it.
And yep, one must be cautious. Of course, people here make up all sorts of things about others in their mind but the reality is they don't know until they know, you know? Lol.