Would you ever tell someone that you didn't like something they gave you as a gift, or didn't like food that they prepared for you,or anything like that?

I can’t imagine doing that! If someone goes to any trouble, even a little bit, I am grateful for that. If I have to graciously choke down some food I don’t like, then I’ll do it.
I have known a woman who wouldn’t hesitate to tell you the gift you gave her sucked, or that she hated the food you cooked. Needless to say, she was never a close friend!