That’s not the kind of data they’re looking for, if you post it somewhere publicly available they already have that without a warrant or anything. The kind of data to be worried about is the kind that those companies collect about where you travel and when, and what kind of people you talk to through email or private messages. Even if you don’t think there’s anything incriminating in there, law enforcement loves to collect evidence that they think can be used to pin any crime on anybody, even if they don’t know what that crime is exactly.