Pretty sure a report for something like that would be frivolous, unless there was some abusive chat log to go along with it. Circumstances vary, but it could always be a guy jerking around with his friend or something. I know it can be annoying, and I personally hate the magitek emote explosion spam when I'm shopping in mor dhona, but I find it hard to imagine SE taking any action without proof that a person is intending to harass you personally. They don't even deal immediately with friend invite spam from RMT. You might as well report people for spamming the jump button, because it bothers you and ruins your immersion.
