The previous sentence already answers this:

> Here, we leverage the “quantum” feature to get exact pulse timings without resorting to cycle-counting

This is just a hard-real-time constraint that already exists in today’s computers and other devices.

For example: Audio playback and processing are a day-to-day operations where hard-real-time guarantees are necessary for uninterrupted playback, and every digital audio device already conforms to it. If the buffer is too slow you get playback errors.