Hand missals are discouraged in the NO because their purpose is already being served by the rite in the vernacular.
Hand missals are beginning to be discouraged in the NO because these were a quaint boomer accessory masquerading toward legitimacy. Perhaps the next generation still uses them here and there for now to humor their elders. Yet except for the likes of Weinandy or Weigel, the postmodern (or whatever you want to call it) NuChurch doesn't even feel a need to demonstrate legitimacy anymore; all those arguments about how it was really done back in the catacombs have vanished. Why bother, when Roche gets his way arbitrarily. What's spreading now is call-and-response, gratuitous enculturation, or some other freeform Theater of the Absurd. A dialogue mass at least is still premised on standardization.
Here is where broad-brush categorizations of modernism lead to imprecision, especially when applied to the conciliar behemoth from the perspective of these narrow margins that don't even want what the neo SSPX is peddling.