Indeed.So because they can search for words and names that appear similar, we are to simply conclude they certainly are of ancient origin? Names are derived from other names or words, over time. Mosiah would have appeared among the people of Nephi hundreds of years after they separated themselves from Jerusalem and its environs. Hundreds of years after they ran from Hebrew speaking people. No, the connection isn't made. It remains a possibility that Mosiah comes from this Hebrew word. I would question whether they can show any names or words in the Book of Mormon that connect directly with ancient words or names. Showing any of the names derive from ancient words is not as easy as showing they could possibly link. Showing any given name in the Book of Mormon looks like an ancient word can be interesting. But it doesn't mean any of the names or words are derived from those ancient words and names. Its possible. But possible doesn't become probable just because. That bridge still has to be constructed.
It’s like Joseph Smith had no access to any ancient names (Bible, cough) and could not create new combinations or mine them from various sources. Uh . . .
The book is written specifically to appear ancient, just as the Late War was written in the Biblical style. It is not at all surprising that Smith’s attempt to sound ancient were relatively successful.