Unfortunately not everyone interprets emojis in the same way.
Without being too brutal......tough. As long as it isnt offensive, aimed at a particular group or condition, humour has a place in life. Laughter is a human condition, it serves a purpose.
Anybody that cannot fathom what an Emoji is depicting is going to be really confused with a map. Even technical manuals use Emojis of sorts. The danger sign, the Emoji seen on power buttons, the sign for mute on a TV remote. The smiley face there says I am saying this in a light hearted and friendly manner.