Flash Fonts in Library

So we all know that you can embed a font directly into the Flash Library by clicking on the Library options menu and choosing New Font... Then you can specify which typeface and style and faux attributes, if you want. My understanding of this feature was that Flash actually somehow held onto that font, so that - for example - if you had to share your FLA file with someone who didn't have that font, they would be able to use the one in the library. Turns out that ain't true.

If you embed the font into the library, but then use a font utility to disable the font for the system, then Flash can't actually render the font. So I'm wondering what's the point then? Sure, you can programmatically call on that font and use it with ActionScript to create a TextFormt, for example. But again, only if the font is available system wide.