I think “game over” is not accurate, but I do think judges and prosecuting attorneys are aware that social media means their conduct is being subjected to closer scrutiny than in the past.
I do actually believe some progress is being made, although of course corruption is still widespread. I am not sure how that can be measured.
The shame is that the spate of DNA-based exonerations which have exposed the problems may be a one-off event, and so far the lessons have not been fully been incorporated into the legal system.
Especially we still don’t really know why jurys convict when proof beyond a reasonable doubt is clearly missing, and little has been done to legally address this fundamental problem.
We do have a kind of informal “citizen review”, but this doesn’t have any legal force. Maybe it should.