Sorry, but I see no reasons against adding artificers.

Yes, this is a magic world. But this does not mean that science does not exist.
Yes, a wizard can throw fireballs, but the average soldier cannot. So every army would be happy if they have someone who can build cannons.
I also see no fundamental difference between building a robot, creating a golem or summon an elemental.
Its just different ways to create a (more or less) loyal minion.

Unless you say that arcanum is the future of DnD ( magic causes science failure and vice versa) I see no reason to avoid a class that does a different form of magic.
I have no problems at all with alchemists in Kingmaker, even though their spells are technically potions.

If we put the "because its magic" argument to the extreme, someone could argue: Why does anybody use weapons when you can have magic?

groovy Prof. Dr. Dr. Mad S. Tist groovy

World leading expert of artificial stupidity.
Because there are too many people who work on artificial intelligence already :hihi: