Dude. Read what you post.
A little bit of deflation is a product of, and good for, economic growth. But, in the case of an economy-wide, central bank-fueled debt bubble followed by debt deflation when the bubble bursts, rapidly falling prices can go hand-in-hand with a financial crisis and recession.
Deflation isn't bad. It is a symptom that occurs after an economy-wide, central bank-fueled debt bubble. That's the bad part. The debt that's not being repaid.
This takes us right back to the start of the discussion. In a crypto economy a central bank doesn't even exist, so crypto deflation is never bad.