Vector, Matrix and Quaternion types form System.Numeric should implement newly added generic math interfaces like IMultiplyOperators, ISubtractionOperators etc.
Since these types already use hardware intrinsic instructions they have the possibility to become default standard for most of the math problems in .NET.
For now it's still required to implement custom Vector/Matrix types if we want to use both hardware intrinsics and generic math.
Preview Features in .NET 6 – Generic Math