Not sure what their intention is of course, but nowadays there is A LOT of Cortexes in various sound gear. Plenty in things like Eurorack but also outboard equipment like the Eventide H9000 etc.
A common trend in audio systems is that the market cap is too small for economies of scale when it comes to commodity parts like processors. There are a handful of audio-specific chips that are common but processors are not one of them (any more).