I think spamming refresh happens not because you're narcissist but because you are eager to see if your opinion is well-received by others. That can be unhealthy. It's one thing to get feedback from multiple sources to notice things and behaviors that are harmful or unwanted (like being cocky or people feeling you're argumentative) and another if you're anxious to learn whether or not others will find value in what you said.

It's roughly like... The "nice guy syndrome", where a person is engaged with what others expect from him so much that he undermines what he personally wants. In online forum terms this might mean that you're commenting in favor of the popular opinion of the forum and not voicing your own opinion to see whether it has flaws or not. Naturally, this is one of the many reasons why a community becomes an "echo chamber".