https://zelda.fandom.com/wiki/Dark_Beast_Ganon#cite_ref-5
"Following his defeat, Calamity Ganon flees to Hyrule Field where he sheds his mortal form and gives up on reincarnation as the Calamity."
This line was mistranslated in the ENG localization; the original japanese conveys the exact opposite meaning
ガノン… はるか太古に生まれ 幾度滅ばせようとも復活を繰り返す 憎悪と怨念の権化
Ganon... An incarnation of hatred and malice, born in the distant ancient past. Even though he has been destroyed many times, he repeatedly resurrects.
復活を諦めない妄念から暴走した姿…
This rampaging form is from his flawed conviction to not give up on resurrection...