Your brain fails to think about differing solutions besides the most obvious.
-He could have found his key was incorrect and not blocked - but didn't remember/didn't bother to remove this topic. Or, it could have been a hacker in the first place, and badspot renewed the ID.
-The aforementioned 'hacker' could be using it.
-New name, old ID - he took his sister's because the old one was deleted - along with the name.
-YOU could be the troll, falsifying information.
-He could be doing that, but not trying to troll, trying to HIDE.
-This could all be part of some elaborate plan i wouldn't even begin to understand.
And many more i can't list offhand...
I'm going to answer to your statements in chronological order.
1. I doubt it, since obviously he's tried it many times, as would anyone before making a topic. Though your argument still is invalid since it is impossible to hack blockland.
2. Also invalid because it is impossible to hack people's keys.
3. If he got a new name then it would show 2 different names on the RTB list, which it doesn't. It only shows one, which in this case has to be his. Which is still working even after this topic was made.
4. Yes I'm totally a troll. I'm totally accusing the OP of falsifying information for stuffs and giggles. Makes a lot of sense.
5. Hide what? That's handicapped.
6. Then why does it loving matter?
All of your arguments are completely useless. The most obvious solution is that this guy is a troll. Pretty much every statement he's said here has opposing information which only leads to two conclusive results, either he's a dumbass or a troll.