The definition of "public" does not even account for the degree of "annoyance" to retrieve the information. For instance most pre-earnings disclosures of companies are made through phone calls between the company and analysts, and this is considered public information as well (audio files are often released on the company website) , though you will agree that this is definitely harder to access and interpret than Twits. Which is why there is a whole segment of data providers selling raw transcripts and NLP sentiments results of these calls.
You can safely bet than anything you have access to on the public internet is public.
The definition of "public" does not even account for the degree of "annoyance" to retrieve the information. For instance most pre-earnings disclosures of companies are made through phone calls between the company and analysts, and this is considered public information as well (audio files are often released on the company website) , though you will agree that this is definitely harder to access and interpret than Twits. Which is why there is a whole segment of data providers selling raw transcripts and NLP sentiments results of these calls.
You can safely bet than anything you have access to on the public internet is public.