The entire religion constantly refers to the past in both the Watchtower Study and as examples for them. What the comment is really implying is to stop looking at the "recent" past or better yet anything "negative about the organization" from the past.
So how far back should we look? What are the start and end points of where reflection in the past about the organization is appropriate? What things do we include or leave out?
Would not an honest look and objective view include their entire past and all things both pro and con Jehovah's Witnesses?
I would also ask how that comment is not applicable to any other religious organization. Cannot any member of any religion make the same exact statement? It does not make that religion any better or "truer" than another.
It is selective attention to the past or-and living in an Orwellian world. You are going to have a hard (and probably wasted) time trying to reason with them.