1000 year bans are considered permanent bans. There has been a lot of trolling going on regarding the Blizzard/Blitzchung incident, and while a high majority of posts have remained opened for discussion (though may be consolidated into a single thread), some posts will be removed if players seek to disrupt that constructive discussion or cause trouble on the forums.
We all have feelings for sensitive subjects like this, but Blizzard does expect us to abide by the Forum Code-of-Conduct and the Overwatch Forum Posting Guides in order to make sure discussion remains focused on the subjects of discussion relating to both Blizzard, Overwatch, and other Blizzard games.