I can't speak to untrustworthy, but sure can to ingrates.
I've sent out alot of packets to Board folks, particularly the 1 1/2" square crowd; to some of them twice.
Very few even acknowledged, let alone thanked me.
For the future, my sending will be limited to those members who acknowledged, without being asked to by PM. And, to all requests from Canada, the UK and Australia, who always send thanks. Maybe they were better taught good manners.