To an old English teacher, precise grammar can be excited . . . er . . . I mean exciting.
This example has problems, but not with the word excited:
I am so excited to see you again!
The problem is with "so." The sentence is quite effective without it, as in "I am excited to see you again!
Many grammarians say adding "so" makes the sentence incomplete, a fragment. To complete the thought, the writer needs to add something like: "I am so excited to see you again that I can't stop dancing!
Discussing grammar can be so boring that English teachers put everyone asleep. Ha ha ha.