Annoying?
I personally hate seeing reviews that the MyGlass application is "Fantastic" and "Finally here!". Most reviews also show no signs of being upset that messages arent supported.
First of all MyGlass is lightyears behind for iPhone. (They advertised it was compatible for iPhone when I purchased and MyGlass wasnt even available for iPhone). Pebble and other smart watches have made messaging possible by sending the message raw data through the hotspot or Bluetooth connection to the app and have it handle the SMS/iMessage. It is not a hard task and any basic programmer could achieve it.
If the limitations of the OS are holding Glass back, why not just use that solution stated above? It is highly unlikely Apple will change the guidelines for a company they cut ties with a few years back.
Chase Keeling about MyGlass, v0.3.0