Apple shouldn't include USB C cables. This isn't a defence of Apple, I simply don't want them foisting their trash on me. Let me buy my own cables that meet my needs instead of bundling cables that don't.
The cables are so damn cheap for Apple that no, I wouldn't expect the price of AirPods to drop when they remove the cable. Apple might charge $19 for a cable, but that's not what they pay. If Apple's rounding to the nearest dollar ending in $9, subtracting Apple's cost for the cable is going to end with Apple rounding to the same price ending in $9, 9 times of 10.
Yes, Apple will see a benefit from multiplying their minuscule cost savings by several million units of AirPods, but we're (the consumer) not going to see a price reduction unless Apple reduces its margins an AirPods. Which I'm all for, but now we've gone past the issue of excluding the USB C cable, which was the topic of this discussion. Excluding the cable itself provides next to no cost savings to pass on to an individual consumer.
There's no issue with Apple excluding a cable that is now ubiquitous and widely available. Apple's crime is charging $19 for a cable that costs roughly $2.50 on AliExpress (1m, braided, 60W, USB 2) and you know Apple gets their's cheaper than that...
I'm probably one of Apple's harshest critics here. I just like identifying the issues properly.