That really is interesting, because as far as I'm aware, I've only seen (and used) the eye roll emoji for, well, eye rolling. At least the iOS one also looks very disdainful to me. So if you had written "you should have tested this " to me, I would indeed have felt pretty bad about it. A more appropriate use would be something like "I walked all the way to there, but they turned me away because they bungled up my appointment ", i.e. something commiserate about. And based on my observation and recollection, I really don't think I'm in the minority here.