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Try to sold 10K btc and see what this does to market.

That's what it is.Why Sell?Try selling shares of any company in a piece (10,000 BTC cca 67,000,000 $) so you'll see what's going to be with price.
Every sale is a signal.

good to know that 1600 wallets have 28% :o

EOS has 49.6% in the first 10 wallets.
This still does not have to mean anything bad (but suggests a "minority rule").

It is when these first 10 wallets plan to sell together :D

And 1% of the people rules about 90% of world's wealth

It's not a world fortune.
It's just a small part money in Bitcoin.