I am just learning the patterns and new to .
So I can be a 100%wrong!!!
Things I considered for this drop are,
1. SegWit2X is going take a share of hashing power that BitCoin enjoys
2. This share is going to be slowly going to SegWit2X side as it has fixed the technical challenges BitCoin has, as miners move to SegWitX BitCoin block becomes more time consuming to mine with reducing hash rate
3. And the Crypto buyers moving their investment into the new SegWit2X is only going to accelerate the fall of BitCoin
2 - when the hashing power drops the difficulty drops to so it will make no difference
You can be right about the chart but you need to research a little bit more about Bitcoin