I doubt he was banned because of that, if that would have been the case all the accounts would have been banned.
The only problem I see with his posts (out of the ordinary compared to other bounty spammers) is the gap between them, he has made 13 posts with an average break between of roughly 2 minutes. No way he was reading the topic or other posts in that time.
So, posts bursting?
You could be right however may be the mods will know better as it's not very clear yet.
Thank you, In addition, I would like to know if the banned account may recover again？