According to OmegaDonut, Status Z-Moves can miss.
Yes, Status Z-moves are sort of like 'pseudo Z-moves'. They are just the regular moves with an added 'Z-power' effect that is used right before the actual move. Unlike the damaging Z-moves, they retain their priority , accuracy and original effect. The move selection menu is also a good indication of this. Damaging Z-moves completely transform the base move and give it a new name (B. Blitz, G. Havoc, etc) while status Z-moves just have 'Z-' added in front of their name.