That 1.3% part is not as bad as it sounds.
Since the prize structure is so top heavy that's going to be around the number because the winners of the big money pools is going to dwarf 99% of the players giving a high 99% of the prize money to such a small percentage of players.
So that number is not as bad as it sounds.
1 person winning 1 mill covers 1000 people winning $1000.
The numbers say DraftKings employees have won about $10 Million.
That is a lot and shows that they are making a valiant effort to win their own contests, particularly the ones with huge payouts, which was created for the public, while at the same time reducing the odds of their customers winning.
That is shady plain & simple.
Playing at others sites is fine...