I think there's two points being discussed here. I think everyone would agree that people should say "thank you" when receiving a gift. I don't hear anyone arguing that.
The second point is what the OP was, I think, trying to point out, that you shouldn't expect anything beyond that. If a gift ends up at Goodwill, so be it. Gift-givers don't have a reasonable expectation to determine what happens to the gifts that we give once they're out of our hands. If you do try to dictate how your gift is used, you're setting yourself up for a major disappointment.
There have just been a lot of threads here lately about how disappointed people are with how their gifted quilts were received. Some of us (and I know I'm not alone here) think it's curious that people get so upset about how their quilts are used or received.