First, I said, "Show me an inconsistency." You did not. The ending of the Gospel of Mark is perfectly consistent with everything else that is stated on the same subject.

Second, it has been known for a long time (since at least the 1800s) that many of the early manuscripts do not contain the last 11 verses of Mark. That does not necessarily mean that something different or inconsistent is being taught.

Third, NPR is the absolutely last place I would recommend anyone go to learn something about the Bible. They are a bit biased toward Christianity.

Fourth, here is an article that delves into the intricacies of textual criticism. Sources quoted are among the most highly respected and knowledgeable scholars in the field. I'll save you some time, but I would highly encourage you to read it. Basically, it states that the ending of the Gospel of Mark was most likely not written by the original author. However, evidence indicates that it dates back to the beginning of the second century. Everything mentioned in those verses is verified by other text that are not in dispute.

  https://apologeticspress.org/is-mark-169-20-inspired-704/