Any data you do provide will be based on some sort of analysis and/or sampling.
Yes they can? Why can't they? Citation needed. Not sure where you get this idea from.
It's the data being requested that's a privacy violation, not the place where that data is viewed.
It is 100% legal and ok for them to look at every piece of information they have about every account and analyze it for bot activity, or allow Elon's team to look at the same data.
Secondly, I'm specifically responding to GP's assertion that letting people access the databases on-prem would make any privacy concerns go away. I'm expressing no opinions on the matter of the first place of if those privacy concerns are warranted.
Thirdly, at this point, I would personally be highly skeptical that an NDA would actually provide any meaningful protection when Musk is the one signing it. His recent actions indicate to me a very high disregard for any contractual obligations he enters on, in the apparent belief that he will face zero material repercussions for anything he violates.
The comment you were referring to says "because that data includes a ton of PII."
But PII isn't a concern here. Unless we're talking about sharing usernames and passwords, there aren't really any protections in Twitter's TOS for the information you willingly provide to them.
PII doesn’t just mean usernames and passwords (which the OP seemed to suggest is the case). It’s anything — or any combination — of data that could be associated with someone and identify them.
I own my data, Twitter is merely handling it. Stop with this presumption that data is Twitter's. Even California has similar provisions on data privacy.
I don’t think automatic analysis with a 5% false positive rate and materially significant false negative rate is that easy even when the subject doesn’t have an incentive to be subversive — last time I downloaded my Twitter data, turned out they incorrectly thought I understood Indonesian(!), and incorrectly thought my interests included beer, blues, college basketball, cricket, DJs, dance, guitar, hip hop and rap, horror, ice hockey, Japan, luxury, men’s pants, men’s shoes, metal, motorcycles, NFL football, offroad vehicles, olympics, pop, “power and motorcycles” (apparently that’s a single category), rock, skateboarding, South America, sporting goods, talk radio, and wine.