They're cute in that video, yes. You're right about kids only liking foods they are used to. That's why parents have to catch them when they're young to introduce them to many things. My nephew has his kids eating sushi and they love it. I remember giving my little Jackie some fried clams when she was about 3. She liked them, and she was eating meat then and other things.Today she's a vegetarian.So...
Whats wring with lima beans? I think they're not that flavorful, I've not had them as much as your folks did, but you can add olive oil to them, a little salt and so on (spices like garlic, onion powder) and have the in a salad. I grew up on the pinto beans and red kidney beans, and my sister hated them., Today she'll have them with rice.