Now you will understand the Gaon -Daf Hashavua

Daf Hashavua Shabbos 123b ת"ר בראשונה היו אומרים ג' כלים ניטלין בשבת There used to be a cult who were called איסיים- טובלי שחרית. They held that on Shabbos one may not move (מוקצה) any כלי even a כלי שמלאכתו להיתר. As a result, they refrained from going to the bathroom the entire Shabbos. They wouldn't use the special shovel to cover-up the צואה with earth. Knowing this piece of history will help you understand the  גאון on the last תוספתא in מס' ידים.