A whole month later, Feral Interactive have updated the Native Linux port of Total War: WARHAMMER III to be in parity with Windows at version 2.2.0 and it's a big update.
Read the full article here: https://www.gamingonlinux.com/2022/11/total-war-warhammer-iii-for-linux-updated-to-v220-immortal-empires-beta-available