You obviously know more about the Switch than I do, so I'll just trust you on the keys topic. Still, even if there's a viable method for dumping it, I think including them on the firmware makes life easier for users. I have no idea how (or if) copyright law applies to keys - can the keys by themselves even be considered intellectual property? And of course, different countries may have different laws.
About the es patches, yeah, I agree that something that specifically affects eshop tickets smells awfully like a piracy-specific thing, but I think the backup argument still applies. One may not have an internet connection that allows for re-downloading an entirely library if necessary (unstable, low bandwidth, data caps, etc...) and at some point in the future the servers will be shut down, so the ability to backup eshop titles may be necessary.
