Maybe they didn't fail us...
Wikipedia: On February 21, 2018, Moxie Marlinspike and WhatsApp co-founder Brian Acton announced the formation of the Signal Foundation
They failed us to sell WhatsApp to FB while the networks effects are (at least in Europe) in full effect. I simply can't abandon WhatsApp due to this now.
The founders of WhatsApp has failed us by selling for FU money. I was happy paying them a fee in the beginning.
Then authorities have failed us by aproving the merger.