As part of ongoing efforts to simplify Reddit and improve Home feed personalization, the final steps to deprecate r/all are being implemented. All links to r/all will now redirect to the Home feed, following the prior removal of r/all entry points. Trending content remains available via r/popular.
Redditors on old.reddit.com, or those with settings that default to the old Reddit experience, will continue to access r/all as expected.
you know when they give you that message, its thier AI just autobanning and just send an automatic message to your qaccount.
Also what likely happen as well, i found out in another forum, is they lump accounts together in a sub and banned them in bulk(and attribute all these account as similar, same users)