I want to throw my voice in with an analogy:

Imagine buying a car with a stick shift transmission, learning how to use it and enjoying how you're able to manage your cars speed with this type of transmission. Suddenly you receive a message stating that other users of the same type of car are experiencing issues with this car and you need to bring your vehicle in so they can fix the issue. Then when you get your car back you realize they removed the transmission and replaced it with an automatic all because some people didn't know how to use the stick shift.

Without Noxious Gnash a lot of the Viper rotation feels weird, like the op said, dreadwinder has lost its utility since you no longer use it to tactfully use it to refresh the debuff over using dread fang. The 1-2-3 feels less fluid as you're forced to swap from 1a to 1b and back again every time you go through the combo. Then there's the theorycrafting that triple reawaken might actually be a thing now, when before it was a meme that would punish you as all of your de/buffs fell off without being refreshed after the second reawaken.