What's up with these new rotors?

I have to agree with this.
Just pack the bearing with grease, put it in the already installed race, tap on the grease seal and be done with it.
Your making a mountain out of a mole hill with your situation.

Can't do that.
I need the new race that came with the new bearing in there.
I have the time and patience for a mountain if that's what I need to do to be sure of my mole hill quality.:D

I would agree with @YY1 normally, but it isn't 30 years ago when we could count on manufacturers and suppliers to not throw the cheapest parts into things just so their prices can be a little lower than the next place.