She got messed up bad in the fight, but her actual death was the quickest, since Doma just broke her neck. She got absorbed after that, not eaten alive. Seems this writer either didn't actually read the Manga or is just changing things to get clicks...
Spoiler: No, tanjiro doesn't clear. Akaza 1v2's Giyu and Tanjiro and outclasses them both. Tanjiro has a huge moment, but Akaza would've ended them both if not for how other things played out. Same with Kokushibo.
