This is a form of shadow banning and it’s more common than you think. As a matter of fact, HN and Reddit do this too.
If HN/Reddit think that you are posting promotions, *HN silently censors your post, claims it was posted*
If HN/Reddit think that you are posting promotions, *HN silently censors your post, claims it was posted*
The purpose of shadow banning is to make it less obvious to the spammer that they triggered the spam filter, so they get less signals to work around.
Same as websites who, instead of blocking access to (computer) users they think are scrapers, change slight details in pages like for prices and whatnot.
A - They have unShadowbanned all previously Shadowbanned users?
OR
B - They are no longer actively shadowbanning users, but previous victims of Shadowbanning are going to stay that way?
Am asking since there is a big difference between the two.