I think what he meant about the $200 jackpot was to roll the number 10000 in the free roll every hour, I have been using Freebitco.in for almost 2 years now, but I also doesn't have the luck to roll that dream number 10000 in the free roll yet 
I have also been on this site for almost a year and a half and I have not been able to win a large sum there. I do not even believe that it's possible. I have no luck there
we are just the same. been using them for more than 2 years already but i havent even got my luck on that lucky roll. guess im not lucky too. or maybe, it is impossible to hit that number due to higher house edge of the site.
You may be wasting your time to hit that number because in gambling we need only luck to win any of these big wins. Also as you mentioned this site has a higher house edge and it makes it impossible to win money from this hi-low game. But to win or hit any particular number you should be very lucky and house edge may not play the role in it.
For example, I need exactly 10 seconds to claim, i claim 1-3 times per day so it is 30 seconds of my life, I don't see how is that waste of time.