Removing registration on Hello servers and WebRTC altogether is not stupid if you give a shit about your privacy, look at the leaks WebRTC provides, local IPs which are great for fingerprinting, real IPs from behind VPN, etc. It's one big gaping privacy nightmare so far, so it's pretty reasonable to have it disabled, until this gets sorted out at least.
Fortunately it can be toggled off in about:config easily.
Set loop.enabled = false to disable hello, set media.peerconnection.enabled = false to disable WebRTC. If you don't want pocket, set browser.pocket.enabled = false.
You can even make yourself one big user.js file to fix the bad ideas that have been added to Firefox lately. Mozilla still has a good thing going for them, and that is user choice. However stupid the defaults get.