I am not sure how to answer as I ponder. I hear two things. "Speaking my Mind" and the fact of whom the author is. Different subjects yet one an object too. Maybe it is not the writer, yet the subject or vice versa. Consider the audience, of which only needs to be one, and usually only one reads at a time.
Then consider the readership, of which some times are along for the ride. A writing class I took the author of renown shared with pick the subject of which to write. Decide purpose. Next, pick one and only one to write to with all your heart, mind, and soul. That person is to be addressed with whatever type of essay chosen. If it is an explanation, of course explain. Do not vary. If an argument then argue the position and not the point.
Good essays have three main appeals to be of strength - Emotional appeal, Logical appeal, and Ethical appeal. Balance, ebb, and flow follow. Lean one way lose the other way. If one sided the audience and readership is not offered a choice. If yes or no it will be yes or no. Simple enough. Voting counts most. Ponder balance of the argument with counters rather than points. The underdog tends to win more than many realize.
Next, be sure they of why they leave. Maybe they are of no care of the subject and just do not like the argument. I ran into that a few times too. I listen, giggle since that is what I do when nervous, and then learn.
Bear in mind if these are not answered with a good argument then it becomes a mystery and fiction rather than non-fiction. Who, What, Where, When, Why, How and How Much. Believe me I am still learning this with each hub I write too. Over and over and over. Maybe go back if you discover which hub they left at with the Account Page. If ten people read hubs as an example, they read only one hub, and one left the group then you know which, then comes the Why. Re-examine if of worth and value. Strengthen or enhance the weaknesses seeking objectivity by adding too - visual, sound, and etc or too removing or both.
Next, remember this quote especially since I blabbed all over the place - giggle.
“I believe that the trade of critic, in literature, music, and the drama, is the most degraded of all trades, and that it has no real value--certainly no large value...However, let it go. It is the will of God that we must have critics, and missionaries, and congressmen, and humorists, and we must bear the burden.”
- Mark Twain's Autobiography
Mark Twain made a living as a critic . . .