The amount of salt and tears the root community is generating could float an aircraft carrier.
Eh, give em a couple weeks and they'll find a work around.
Here's the thing, this isn't Netflix specifically blocking these... they're using Google's provided DRM per the story:
"With our latest 5.0 release, we now fully rely on the Widevine DRM provided by Google; therefore, many devices that are not Google-certified or have been altered will no longer work with our latest app, and those users will no longer see the Netflix app in the Play Store."
So this isn't a matter of Netflix blocking devices, it's them using Google's DRM they provide. Who knows how many other apps already use it, and how many in the future will also affect rooted users once they just on board Google's DRM. The plus side is, the rooting community only need to find a way to beat the DRM... which will then fix all apps that rely on it. Netflix is just the first (or biggest?) company to be using this DRM now.