2

For this option to be in plasma, rather than having to install separate programs.
like https://wiki.archlinux.org/index.php/unclutter

+1
I've seen the use of blank or invisible cursors... but I don't like the permanency of those themes
Obviously others do... and I get the need for touch screens
XDefineCursor is an alternative but again, setting the cursor to none just didn't feel right
I like apps--like mpv--that hide the cursor when its not in use