My own high school debate days are decades in the past. From that perspective, though, the fact that you can easily look up the judges' biases, and so prepare for them, is a huge advance that we would never have even dreamed of. To me that seems like explicitly addressing biases in a useful way.

I'd be interested in a more serious analysis that went through all 47,000+ paradigms and categorized biases so some non-anecdotal conclusions could be drawn. That would take a lot more time and money than picking out a few instances that the writer knows about.

And yes, if an alternative ends up being liked better by debate coaches, people will go in that direction. It's entirely possible that debate competition will end up being as fragmented as national politics.