When a SEI sees a SEE using , it's probably the case that the SEI sees the SEE using the in a somewhat garish and irksome manner - it does not seem to be being used appropiately.
This may not be sufficient to cause major aggravation, but it does make the individual feel "What are they playing at? I could do better than that..." etc.
Perhaps it will spark a mini-rivalry, or simply a "Meh.". The individual may not quite feel the need to speak up\act, unless they've been "pushed" for some time.
I think the individual sees contrary or illusionary individuals as challenging their "abilities"...but it generally never seems like they are doing it on purpose (perhaps because the contrary\illusionary individual appears to have a different approach), and also the two individuals are sufficiently apart from each other that they don't clash significantly.