LDS Member Denies Anthon Transcript is ‘Reformed Egyptian’: What Evidence Proves Otherwise?

I’m in a discussion with an LDS member who claims that the Anthon Transcript is not Reformed Egyptian and that we have no real way of knowing what Joseph Smith meant by “Reformed Egyptian.”

I’ve presented the following: • Images of the 1844 BOM broadside. • 1970s gold foil edition of the BOM • The excerpt the from the Newspaper the Prophet.

Despite this, he still denies the connection, arguing that we have no way to verify what Joseph was referring to and that the script doesn’t resemble known Egyptian-derived languages.

What other evidence is out there to confirm that the Anthon Transcript is Joseph Smith’s attempt at “Reformed Egyptian”? Are there linguistic, historical, or scholarly sources that further demonstrate that the script is not authentic or that Joseph’s claims don’t hold up?

I appreciate any insights or sources you can provide!