How do you currently measure the amount of disinformation and hate speech on Twitter's platform? And how do you define those terms currently? I can promise you

How do you currently measure the amount of disinformation and hate speech on Twitter's platform? And how do you define those terms currently? I can promise you, no matter what he does, people/sites you follow will likely extol how terrible the platform has gotten with disinformation/hate speech, even if he does nothing. How will you protect against that negativity bias? Do you have an objective way to know whether it's gotten worse or not, or are you going to rely on anecdotes from the sources you follow?