Forum channels open in the layout you pick, List or Gallery, instead of the one the server set.
Forum posts are sorted the way you pick, Recently Active or Date Posted, instead of the server's order.
You can still change the layout and sort order for a single forum from its Sort & View sheet. Discord remembers that choice for that forum, and the sheet's Reset to default button goes back to your defaults.
Media channels keep their gallery, and game invite channels keep their fixed layout and order. Discord mobile only offers a layout choice in forum channels, so the plugin leaves these alone where Vencord forces your layout on them too.
A changed default shows the next time you open a forum.
A port of Vencord's OverrideForumDefaults.
Settings
Default Layout picks List or Gallery. List is the default.
Default Sort Order picks Recently Active or Date Posted. Recently Active is the default.