"The same, using a blood sacrifice to cast the Wishing Spell, once you succeed, this plan will be passed down, and the world will be burdened with more knowledge that desecrates the Deity by harming life."
Alchemy's biggest problem is not its own danger, but its replicability.
A mage casting a spell still depends on their own level of intelligence, otherwise, even understanding the principles of the spell won't work, and casting could blow oneself up.
Alchemy is different, it is purely replicable technology.
Seth Yuri, relying on self-taught alchemy, and with the help of the goblins, managed to improve the entire structure of the Magic Array without the help of a Legendary Alchemist.
Even with Moradin's blessing, the greater reason was still alchemy's replicable nature.
Once this thing was successful, and it got passed down, it would be continuously improved, sooner or later it would revert to its original state, and might even undergo optimized upgrades.