Over here they're sprayed with fake snow, glitter and whatnot and sold in supermarkets, gift shops and big box stores during christmas season. I'd say that out of a thousand sold, maybe one ends up in a garden. That's a super small percentage. I know 45 people who have owned at least five of them, and none of those people have kept them past new year. For 3 dollars a pop, I wouldn't expect anything else.
Like those procumbens mallsai, over here they even have an indoor label sometimes.
They make good garden plants, that's true. But in sheer numbers.. I disagree about the norm statement.