Dorsey’s tweet was a poll with the subject simply being a “?”, with the choices being Yes or No. While the message itself is cryptic, it’s likely Dorsey venting his frustration with regards to the format of the hearing; US lawmakers typically present either a loaded or unnecessarily complicated question to the subject, but demand that the latter reply with a simple “Yes” or “No” answer.
As you can imagine, Representative Rice was less than amused with Dorsey’s tweet and even brought it up during the five-hour session, asking the CEO which poll answer was leading. Dorsey’s answer was a monotonous “Yes”. At the time of writing, Yes currently leads at 65.4%, while No is at 34.6%.