Sort of. You can delete lots of folders and there contents in one go. You can open a folder and select a number of files in one go and delete them. You can't do both at the same time. It will take a while to process a long list of deletes. You can press the power off button and the box will shut down when it's finished.
Media - OPT+ File Manager. Yellow to enter edit mode.
Delete Multiple folders
Click OK on folder to set/reset tick.
When all folders you want to delete are ticked. Red to Delete.
To delete within folders - open folder before entering edit mode.