Except that murdering the competition doesn't actually make you a great artisan, let alone "of them all" because "of them all" implies both alive and dead.
There are two obvious questions:
- "The greatest" in whose eyes?
- Popular acclaim?
- The guild itself?
- A wider circle of experts?
- The greatest how?
- Winning a set competition?
- Creating something legendary?
- Making them irrelevant through invention (e.g. bringing steam hammers to craft armour)?
- Driving them out of business and having them work in my shop?
So the evil character in your example doesn't actually believe their bond. They will show them and crush them, but it's not about being the greatest artisan. And both the lawful and the chaotic one need to first define what they mean by "the greatest artisan of them all". Chaotic is
more likely to want popular acclaim - but this is about as far as I can see it goes.