They’ve moved over to quads. Whatever the hell they are. Around the TNG era they were talking in kiloquads I think by voy their into the gigaquad range.
My head canon is that a quad is a term employed due to the way isolinear chips store data in a 3d matrix.
Exactly. Just as binary digit got abbreviated to "bit" and a collection of (eight) bits became known as a "byte", I figure something similar would happen for quantum digits -> qubits -> quads (because "qubytes" sounds awkward and "quants" sounds like something you couldn't get say on network television).