While I view this move as hypocritical of Google, it does feel like it's in their customers' best interest. Think about it from a less technical perspective: I can install an app from the official Google Play store that voids my warranty . They can't have that on their public facing store. Google wants users to install apps, they don't want them to be afraid of voiding their warranty. It's interesting to see how thin…
Eh, it's actually a pretty weak argument. It doesn't violate your warranty on a nexus device. If google believes in the nexus program, then this is not a particularly consistent position.
I definitely agree with what that one Reddit comment says - if you can't sideload it then you shouldn't flash your ROM.