The newest member of the Haiku family is a font manager. I have a lot of font packages on my repo. Some of those are just drop-in replacements for Arial, Courier, and Times New Roman. I'm not interested in those. If you need those fonts, you will install them and leave them in place. Fontmonkey will also not touch the standard Haiku fonts.
No, it's the fancy font for a poster or a flyer that concerns me here. Typically you use those once, and then they just take up space on the HD and clutter...