The seller is a whale, no question about it. Kinda dangerous to hold a coin that is held by some whales who can move the markets with their moods and emotions. 
Absolutely true. Perhaps the most important thing you have said in your entire BTCTalk history. This coin is not suitable to be introduced to any new people through word of mouth or even pointing to any articles or other literature.
This coin is in all the wrong hands you can imagine. Even Darkcoin/Dash is built with a lot of solid hands giving it value.
This is why we need zcash. Just like we need Ethereum, not just for technology but for value and respecting value of an asset.
I am not selling though. I am lending and the interests will accumulate. Over the years with compounding interests the interest collected will be more meaningful than my initial investment.