How can you say that? It’s so happy 
And for the dislike not to be specific. Neither is the like. sometimes it’s obvious, but often the reason to like a post can have multiple explanations just as a dislike.
But we don’t force someone to explain his like, why would we need that for a dislike. Can someone not express he dislikes something without being forced to elaborate on that?
We just had it recently in this post where people freaked out and and came along with assumptions and accusations just because someone used an emoji that didn’t convey approval.
I’m fine with someone using an emoji to show he does not like something, but I’d rather not have him explain and elaborate on that in a lighthearted topic like that one.