Sounds like they talked to a lot of people and then either purposefully ignored them, or just literally stopped putting any work into the font license after the release. The FAQ you linked claims that they tried improve on the standard SIL license by adding clarifications, but the Fedora bug thread that’s linked in the Stackexchange answer looks like Canonical’s license is actually considerably more ambiguous.
They go into a lot of detail here about why they forked an exisiting license, but i don’t understand the copyright stuff.
https://canonical.com/legal/font-licence/faq
Sounds like they talked to a lot of people and then either purposefully ignored them, or just literally stopped putting any work into the font license after the release. The FAQ you linked claims that they tried improve on the standard SIL license by adding clarifications, but the Fedora bug thread that’s linked in the Stackexchange answer looks like Canonical’s license is actually considerably more ambiguous.