Yup, like Kalir said those aren't primary slot boons, they're hammer upgrades, which only care about what aspect you have insofar as what you're offered. There's some special hammers that only show up when you're using certain aspects as well, the most notable in my mind are the suite of hammers that only show up when for the hidden Rail aspect.
Got it. It just read weird for anyone new who might not have realized that boons will tell you when they replace a different boon.
Anyways, punching things in this game is pretty fun.