How to tell your OSS is ridiculously popular: people aren't 100% sure they _didn't_ embed it, and tack on the software equivalent of "packaged in a facility where peanuts were also present" to the license list.
This watch contains software, so statistically probably contains at least traces of curl.
Boring joke deflator: afaict it's just Garmin's standard wording so that they can splat in all licenses to everything involved in any of their products, rather than have to generate license compliance text specific to individual firmware builds. But also, lol