Berylsgranny I am sorry you are confused, but it is really quite simple.
Many people think that a moderator has been too harsh in suspending a long-standing poster for some undefined offence, and also think that some moderators have been interpreting the site guidelines rather randomly and unequally.
For instance, a thread discussing another thread is not allowed, which is reasonable if it is just for continuing an exchange of insults that has been deleted, but it seems we can't even mention the name of someone who has been banned, and wonder what they did wrong. They have even ruled that saying that we haven't seen X for a while, are they OK? is not allowed in some cases, but let it pass in others.
The site is "lightly moderated" which means that they should look into complaints about posts, but in reality some moderators seem not to look into the circumstances at all, but just delete a post automatically if someone doesn't like it. This is not moderation!