Seriously, making a thread for pictures of a person is bannable?
No.
Spamming is.
One thread for nothing but spamming is against the rules and because no one took part in the thread, it was further justified to be locked under spamming.
Then he made three other threads five minutes apart after each lock, then spammed images in multiple other threads because he got butthurt.
So yes, multiple spam attacks and breaking the rules is a bannable offense.
I can't see the difficulty you're having with the issue.