I also grew up in the 70s and have never seen one of those things in person or even known anyone who ate one.
My oldest aunt was pretty bad for jello mold food. Xmas memories include this abomination for dessert. pretty sure there was also canned milk involved
I made lemongrass meatballs on top of a spinach and plum salad last night. (Yeah, it was a meal kit thing, I'm not that creative.) Seems like a similar principle -- cooked ground meat on top of greens -- although the pickle juice, mustard and ketchup dressing sounds pretty gross.