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then yes it does matter that the angle is correct
Does it though?
I’ve bodged together a load of regular 1 1/8” press in cup and integrated type headset bearings and some 44mm and 56mm headtube stuff with whatever crown races I’ve had on hand and never had to bother measuring angles.
Have I just gotten lucky?
Top bearings are a different matter, the split wedge seems to sit atop some and inside others so you definitely need to get a pairing that works together.
I don't know which angle the hope one is but assuming the fork has an integrated crown race then yes it does matter that the angle is correct