arthas was hardly corrupted by the jailer, if you paid attention to the new cruddy lore. you’d realize that the jailer literally had a more forceful hand with syl, talking to her face to face. not through any middle men or other means. while arthas from wc3 was a downward spiral a cautionary tale of what revenge, obsession, hatred, misguided good intentions can do to a man. arthas was egged on my malganis, and ultimately fell by his own hand. for people who “care about arthas lore” you’re missing the point of his rise, rule, fall, death, and final death.
ya cause you really want arthas to be “present” for a single patch or moments like kaelthas, kelthuzad, uther, and baine bloodhoof. arthas fading away after his moment of corrupting anduin was probably the best ending to his story. it was impactful, it shows how he is unredeemable due to him forcing his own fate on another human prince. how anduins father and i guess teacher comes to anduins rescue as opposed to arthas murdering his own father and mirroring how arthas father sent him off.