Lol, of course there isn't any evidence. We're talking about an extremely hypothetical scenario. Both of our positions lack empirical data. The difference is, my claim is descriptive, while yours is loaded with your own personal value judgements.

And my claim isn't that a species visiting earth is going to have the same problems / conflicts that humans do. It's that they wouldn't be surprised. Or, they would have probably gone through a similar development, making the same "mistakes".