Apologies if my post created some confusion. Before the update it was only possible to delete empty sections but with the new update you are able to delete Sections even though they contain tasks but these tasks will also be deleted. You can learn more in the following guide article: https://asana.com/guide/help/projects/sections#gl-delete-section
We have two existing threads regarding Sections that you might be interested in upvoting:
Apologies again. Please let me know if there is anything else I can help you with! Have a great week!
