There is a Magen Avraham in Hilchas Yom Kippur 610, that makes a distinction between chometz and Yom Kippur. Chometz cannot be touched because everything else is permitted, whereas Yom Kippur all food is forbidden.
See the Sefer Paninim Yekorim who explains with this why Chavo said that you can’t touch the etz hadaas because all other trees are permitted.
Menu