Do you believe the ending to Frederick Douglass’ story is adequate/sufficient?

Adamantly believing that a slave’s chance at extricating from their damned lives, towers over the reader’s simple curiosity and
hope of a satisfying story; I agree that Douglass gives just enough information to capture the essence of the narrative without impeding on his brethren’s possible chance of freedom.
For instance, in Douglass’ opening phrases of Chapter 11, when explaining his minutiae regarding his escape, he counters with this, “First, it is quite probable, that others would thereby be involved in the most embarrassing difficulties. Secondly, …such a statement would most undoubtedly induce greater vigilance on the parts of the slaveholders…by the means of guarding a door by which some dear brother…might escape. ” Had he continued to write the story without any thoughts of the others involved, he would have potentially endangered his relatives. This integrity speaks louder than any story or words could have possibly said. Subsequently, giving the readers one last glimpse of his true disposition without having to intrude on another man’s hope of a desirable, liberated life.
Also, Douglass was an extremely humble man who wanted his book to do much more than make a measly dollar or gain empty publicity. Instead, he wanted it to change, transform, and mold his ready audience along with stubborn peers. Staying somewhat ‘under the scenes’ if you will, Douglass profoundly points out that he “… [has] never approved of the very public matter in which some of [his] friends have conducted what they call the underground railroad, but to which [he] think[s]… had been made…the upper ground railroad.” Though he genuinely appreciated their work, he doesn’t believe that they should be proclaiming such things in such a public manner, perhaps even “like the Pharisees”; for it could unintentionally cause more harm than help.
Therefore, Douglass shows, once again, his compassionate and thoughtful knowledge as he gives up part of his testimony on behalf of his brethren’s safety. Surely, had every detail been released, it would have potentially altered the course of history having a ‘butterfly effect’ starting with a single slave. Though the curious ear may be disappointed at the abrupt ending, but thinking ethically, one will realize that Douglass did, in fact, do the right thing in ending the narrative the way he did. To conclude, the end of the book completely for filled the purpose the it was initially intended for, even when leaving out details.