It started as creative interpretations, then got added to every browser except Firefox , then got added to Firefox because too many websites were relying on it.

It started as creative interpretations, then got added to every browser except Firefox , then got added to Firefox because too many websites were relying on it. And now it's in the spec, because too many sites are relying on it, so a browser that doesn't do it wouldn't be web-compatible. Classic race to the bottom. :(