you can see here original post: shadowbot-preparing-for-launch-of-shadow-chat
and more has been said since then, but primarily the benefit would be that less fraud is happening from fake accounts on the chat copying the names of someone's account on steem. This should be obvious but people you talk to on rocket.chat are not always who they say they are, and many people fall for scams from trusting the use of a chat that isn't actually linked to steem in any way.
As an example, here is one of many instances of someone finding scammers on steemit.chat: https://steemit.com/scam/@fuzzyvest/the-false-fuzzy-on-steemit-chat
I can surely understand that ! Its a valid point!, however there is also the need of the hour that the existing system functions properly and the users who are contributing are benefited as well. So in short, the current system's proper functionality is the priority and need of the hour!!!
Shadow Rank boosts are calculated once per week, but that does not mean every caster each week receives a boost. Shadow Rank is used as a balance based on your performance outside ShadowBot relative to how much ShadowBot provides to you. As we scale in users, the ability to earn Shadow Rank will continue to get harder since we are shifting to a priority on re-investing in your Steem Power for growing pool priority. Those who build up and earn and then re-invest their earnings into Steem Power will see the biggest benefit in the coming months from ShadowBot.