It appears that he has a second account that he opened in 2011, made a few posts on it back then, and started using it again in December 2022 with one post about a thread pitch on ROPS bolts. Then 2 posts about getting his other account activated again.
This is a common thing for people to do, they don't keep their email address current, and then they forget their password, so they open a new account under a new username. On the forums that I administer, I don't allow this, but what I do is give them a generic password and have them send me their current email address so I can put it into the system and update their information. Once they get back on the forums, they can change the generic password to whatever they would like to use. For continuity of the forum members, it is best when members only have one user name. Every administrator picks and chooses how they want to run their forums, and there is no right or wrong way. On my forums, my moderators have full access to assist members with passwords and email address changes.