I don't think there's legal consensus that posting the locations where an aircraft travels constitutes doxing in the usual sense of the word.
Posting a link to a web page that publishes the public tracking information without even mentioning any person’s name almost certainly does not constitute doxing.
That seems pretty narrowly scoped to protecting witnesses, jurors, informants, public servants, and their immediate family members. The personal information it covers is also limited to SSN, home address, phone numbers, and personal email.
That's applicable in a pretty small amount of cases.