Did I see someone objecting to people being pedantic in what they post on a thread in Pedants' corner ?
On the Games threads, posters are playing Games.
On the Food threads, they talk about Food.
On the News and Politics threads, they discuss Politics.
On Am I Being Reasonable, they ask whether their reaction to something is Reasonable
On all threads, posts often veer off the subject, but in general, the main discussion is on the stated thread title, and under the relevant topic heading. Under "Pedants' Corner", you can expect to find pedantry. There is a clue there in the name of the topic.