I just checked his post history and just by looking there, I'm going to guess that it's because of of his burst posts, he is making fast posts in a very short period of time.
The same thing applies to your account so once again, guessing that you're not his friend but you're the same person.
Hello OmegaStarScream,
I will inform him that's the reason why his account might have been blocked. Thank you for the help.
PS Nope it isn't my account, I only have this one.