They still require you to replicate the copyright/license of the font itself even if open-source. Like SIL: > Original or Modified Versions of the Font Softwar

They still require you to replicate the copyright/license of the font itself even if open-source. Like SIL: > Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license.