Yeah it was pretty obvious he's going to craft the hell out of that curse.
I've been harping on the stupidity of his craft skill for a while so the joke's getting old, both the joke of his craft skill itself and the joke of poking fun at how stupid it is.
So let's instead turn to the stupid ex-fiancee who decided to go with the brother because the guy at least had one crafting skill ages better than the MC. Baby crafting.
Too bad baby crafting don't pay the bills. In any case, she can go rot in hell as well. She only regrets backstabbing the MC because it's threatening the soft life she's been leading, not because she loves him.
But hey, maybe the MC can craft her an abortion and a womb renewal and a mind wipe and she'll be pure again for the power fantasy unchallenged harem 72 virgins etc etc. I'm mixing wires here, but the result is the same in the end.