I am aware of their lottery and also looked at the data on Twitter, but I know that this is just smoke and mirrors and any results are rigged by manually indicating to the User the % chance of winning.
Your previous assumptions were already proven wrong, so it is not possible to rig the lottery in the way you think it can. You can’t arbitrarily assign a specific user's tickets a higher weight. Each individual ticket has the exact same chance, and nobody, including FreeBitco.in, can know which user is going to win until after a designated Bitcoin block in the future, from when the ticket file is published, has been mined. The winning ticket number will correspond to a user ID that is already determined in the ticket list, they cannot change who this ticket is assigned to after the fact.