Really not. Who uses composite video nowadays?
No on-board HDMI because they expect a lot of people to want to run it headless, but because the composite video is essentially a freebie (it doesn't require all the chippery of a VGA or HDMI port), it's cheaper to add it to the full production run than to have it as an optional extra. So why not include it? At times things will go wrong, and you may need to look inside -- so think of it as a diagnostics port, if you like.
Realistically it is $19 or $24 for the VGA and HDMI respectively, especially in the use cases illustrated in the o-so-funny-and-games video.
... which aren't really the intended use cases, are they? It's just hard to demonstrate how to use something for various unspecified makery uses.
Compare this with the Raspberry Pi line and the reason for C.H.I.P to exist is nowhere to be found.
Actually, it has a massive plus in its favour against the Pi -- it's a chip you should be able to get hold of in relatively low quantities. The Pi is kind of handy for prototyping embedded devices, but as the Broadcom chip in it is only available in extreme bulk, you're not normally working with the chip your final product will use. Here, though, there's the realistic possibility of getting the same chip as the CHIP for your product, so it's a very attractive prospect as a prototyper. Including the battery circuits makes it extremely attractive, because that means the prototyper only has to worry about wiring up the GPIO to enable their specific use case -- it's damn near plug-and-play.