I have seen you have mentioned by a neutral trust that possible change of the account in 2017. But I have not got a clue about it. The first-time password was changed on at 10/18/2022 5:56:16 PM and woke up 10/18/2022 5:55:27 PM. But if ownership changed then the password should be changed too at the time of ownership change!!
Why should ownership change automatically mean that password and/or email change has to happen as well? Sure, it makes sense to change those things if you bought an account so the previous owner can't retake control of it, but accounts are not always sold and instead they are just given (like friend giving a friend his account) and in order to raise any red flags, the new owner decided to keep the old password.
By the way, have you compared the posts made in 2015 with those from 2017? How would you explain regress in the English level as people usually get better in foreign language through years or use, and not worse.