Ultimately, the resolution between Welkin Moon and Battle Pass is dependent in your gaming habits in Genshin Impact

https://www.scribd.com/document/894020275/Maximize-Your-Primogems-Efficient-Strategies-for-the-Spiral-Abyss-and-Smart-Revive-Usage-158034

Ultimately, the determination among Welkin Moon and Battle Pass relies in your gaming habits in Genshin Impact