All of those things are contributing to the dire situation AMD currently find themselves in as a business...
Pump QC issues putting people off buying Fury X and costing AMD in terms of RMA's.
Less VRAM than their competitor due to HBM issues makes Fury far less attractive.
Far lower tessellation performance than their competitor meaning AMD are resorting to driver cheats.
Putting premium prices on previously value products.
Rebadging their line-up with Fury the only actual new GPU (didn't even bother updating old products to their latest GCN1.2 architecture).
All of the above adds up to a company that is in serious trouble both now and going forward, assuming they can survive long enough AMD really can't afford for Zen not to be a big success.
That's not something they can just knock up in a few minutes, it would require 'almost' as much work as designing a whole new processor.