The distinction was easier before digital type. Today we have no physical object to represent a font. The font file itself might be the closest analog to pre-digital fonts but that seems to be an even more extreme view than I took in the post.
Edited to add: But none of this changes the fact that Adobe Garamond and Garamond 3 and ITC Garamond are not the same typeface. If you wrote the original article, you should probably update it to fix this mistake before readers start getting the wrong idea.