Life experience. Governments aren't in the business of spending time and energy drafting laws unless they can recoup a little piece of the action for themselves.

Several articles I read mentioned they want the ability to freeze assets. I also remember several articles over the last couple of years that people are paying for rentals in cryptocurrency.

If landlords are not reporting that income, the Government aren't getting their share in taxes so it makes sense as to why they want something official on the books so they can collect their portion as well as levy legal encumbrance on it.