Selfishness in steemit communities

The communities here on steemit repress people who create content on other sites, I don't see them as fair as such, a platform is for that, create content and call an audience to work that you have done either here on steemit or in others platforms. , I don't understand why the moderators report a lot? Yes, it is normal to look for engagement and look for the opportunity to have more visibility, in addition to educational content about cryptography, content that can help many people!