Such a consecration would likely have the effect (were Berogoglio actually a pope) of converting Russia (including Putin) and then having the Russians take all of Europe, including Ukraine, and convert them away from their paganism. Putin has already denounced the Satanism and pedophilia and "contrary to nature" transgenderism of the West. While these people are hoping that the consecration brings victory to the West, are they hoping that their freedom (for perversion) will be strengthened by this consecration? Hardly. Their "democracies" and "freedoms" would be destroyed by a genuine consecration to Our Lady.
Russia has a colossal abortion rate, HIV is rampant and the portion who practice their schismatic religion is tiny, fewer than the rapidly growing minority of Moslems (which grows every faster as the native Tatars have a high birth rate, but white Russians have been departing at a very rate, while Central Asian Moslems arrive in great numbers). Russia itself needs the consecration too, whatever rhetoric comes from Putin.
Francis himself has shown himself a supporter of the culture of perversity in the West, repeating receiving troons (these are usually lesbian fetishists who are a menace to women, sodomites and atheists, and the less said about his direct support for pederasts like Grassi or Inzoli the better (it is not fit for decent ears and Globohomo doesn't care) the better. Francis won't consecrate anything. He can talk out of both sides of the mouth, but he would never take such a stance against sin (for him all are saved).