Why are walking snowmen off-topic without other fantastical things? I don’t get it.
In line with our policy regarding talking animals, the mere existence of sentient/walking/talking snowmen (or any other thing that's normally non-sentient like helicopters, trains or diggers) in a property doesn't, in and of themselves, make that film/book/TV programme/comic a 'fantasy' if the central conceit is that those "sentient whatevers" simply exist within that fictional universe without provoking explanation.
That said, we would consider "sentient whatevers" to be part of a fantasy if:
Their speaking was somehow fantastical to the other characters.
With regard to your specific question, the mere presence of animated snowmen that you can push around with your finger doesn't make it on-topic (which is why it was closed). The fact that it was subsequently shown to contain some sort of power-up that allows you to perform magic does make it on topic (which is why it was reopened).