Channels with RSS feed reposts (only) get archived for lack of activity
So I noticed recently that all my feed channels got archived on user accounts that subscribed to them...
and the only explanation that comes to mind is that feed reposts somehow are not counted as real activity, which is also corroborated by the fact that when I click on "recent activity" only the non-feed posts show up.
This is obviously quite unwanted as a result, given that many such channels are specifically set up to repost a RSS feed only and are not used for other regular posting at all.