As Italian (and Ferrari fan, but that's another story) what really matters for Ferrari (and ~~Lamborghini~~ Maserati) is that they aren't mass produced, they are not an industrial product (most of them are assembled by hand) and - most of all - all of the parts are produced in Italy!
What the minister is saying is that if Ferrari can't build autonomously their own batteries - from scratch - they can't produce a real Ferrari.
Of course this is different from buying batteries from a supplier and strapping them in a mass produced car, assembled by machines.
It has nothing to do with rich people or taxes, it's just a matter of bootstrapping an entire industry from the ground up.
Of course Ferrari knows how to build electric engines, it's completely out of touch to think that one of the leading car producer in the World in terms of know how can't do what BYD does (Ferrari is the only F1 team that still manufactures all of the components of their car from the engine to the chassis and everything else)
edit: Maserati, not Lamborghini.