Delete all photos

Open Photos. From the Library tab, tap All Photos, then tap Select. Slide your finger across multiple photos till you select all of them. Tap the Trash button, then confirm to delete the items.

Delete photos on your iPhone or iPad - Apple Support (IN)

But do delete in small batches, not all photos at once.If there are several thousand photos in Recently Deleted at once, it may not be possible to empty Recently Deleted and Photos may hang. It is safer to delete in smaller batches.

This is not helpful when you have 27K photos. It will take me days to select by dragging. I tried and got very frastrated. For that size of a tech company with so much technology there got to be an easier way to delete all the pictures in one or two clicks. How can I move all of the pics to trash quickly?