I would think the same. If the argument is that the negative expression 
is traumatizing/stigmatizing, I think same scrutiny should be applied to other reaction emojis.
is already ruled out. Then if I react to a post with emoji that indicates the post made me 
cry, 
angry or made me do an impression of Edvard Munch - The Scream 
. I think all of these are unacceptable too.
Same goes for 
, that looks like the post made me sad. Also 
should be removed since that indicates either that the post was funny in a good way, or that the post was funny in a bad way. Furthermore the 
should be also reconsidered, since that seems like expression of love, and I think we should maintain a level of professionalism in the public forum.