As far as I get the message its about dms of people who want to see the content. Whats the point of not following then, just want to see it randomly? They must have stumbled upon it probably in global, then check it out and follow. While I disagree with the method of block here presumably in advance as this may prevent new followings, it is a spam shield in progress that must be elaborated to distinguish between the true content and shit. So again like I wrote before I follow and thats why I see the content.