I agree with you but there is another thing people sometimes forget. If the material is for a training course or similar people wants something to take home aft

I agree with you but there is another thing people sometimes forget. If the material is for a training course or similar people wants something to take home afterwards but that should probably be some kind of documentation instead of a Powerpoint presentation. When it is the same document one might get tempted to write too many slides with too much text on them.