There we go. How convenient. As you can see, we have just rolled over 2.4 million bets at 500 max bet. Therefore we arrive at the following connundrum:
1. 2,250,000 bets at 500 BTC is enough to guarantee variance within 0.9% < profit < 1.1%.
2. Actual sample size is a minimum of 2,400,000 because not all bets were made at max kelly bet.
3. Actual site profit is less than 0.2%.
The site has had 5 bets of 500 BTC or more. Not 2,250,000. I expect that maybe invalidates your conclusions.
Here are the 5 bets:
#7093577 bet 561.29526541 BTC at 98% and won 5.72750179 BTC
#13076611 bet 500.00000000 BTC at 90% and won 50.00000000 BTC
#13856884 bet 500.00000000 BTC at 90% and won 50.00000000 BTC
#13865610 bet 500.00000000 BTC at 90% and won 50.00000000 BTC
#14740956 bet 640.00000000 BTC at 90% and lost 640 BTC
In total, there have been 2073 bets of 100 BTC or more,
901 of which were for 200 BTC or more,
129 of which were for 300 BTC or more,
61 of which were for 400 BTC or more,
5 of which were for 500 BTC or more,
1 of which was for more than 600 BTC.
(Each total includes all following totals).
This is nowhere near your estimate of 2 million bets over 500 BTC.