All post back to back is early bump.
Your posts #3, #5, #9..
He didn't back-to-back post a single time.
Early Bump:
Posting 2 back-to-back posts in one thread before 4 hours.
Creating several threads to bypass the early bump rule.
per trade rules.
also:
No trades via PM. (It's harder to prove a scam via PM than from a trade thread, so always negotiate and deal through a trade thread, not PM).
However, while the trade related communication is supposed to take place in the thread, there are particular posts that fall under the Early Bump rule even if they are not directly covered by the definition in the Trading Rules.
Posts such as "t4t" or "pmed" have - if they don't have any other context - no other purpose than bumping the topic and are also considered (or rather: treated like) Early Bumps. A "ty" should really take place in PMs, a "PMed" is not needed as they'll get a notification about receiving a PM regardless. Your topic contains a handful of such Early Bumps and I would assume that that is why it had been closed.