Golly gee willikers!
I'm sure the manufacturer will make more money if they can get you to locktite your bottom bracket in so they don't have any warranty cost unless you have some kind of problem down the road, but that's not the point is is?
That's not a cheap bike. You deserve for it to be right and it isn't. They've admitted that it's their fault. They should replace it. What other justifiable ending can this story possibly have?