If you look at the GitHub repo, most of it is READMEs describing systems, not the models or code subleties which actually give explanations into how certain weird behaviors on Twitter happen. (e.g. the preference of certain users in the For You tab. EDIT: bad example, since there appears to be a flag for that in the code, although it does not specify which users are on the list)
Where is the file containing accounts that are artificially boosted? We can guess what its single line is, but how is it incorporated into the algorithm?