Iti 1.3, which you quoted, shows that eradicating moha results in non-return.
Other suttas teach that eradicating avijja results in arahantship.
Different, meaning that "Since we have already seen the Buddha defining delusion as ignorance" is incorrect - a mis-reading.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"To argue with a person who has renounced the use of reason is like administering medicine to the dead" - Thomas Paine