The interviewee below may or may not be Gerald Donald, the surviving member of Drexciya, but it sounds like him and in any case these are words to live by:
Why has your music remained so singular?
Endurance is relative to the observer.
Why the anonymity?
The music is more urgent than the organizers of it and should take a place of primary importance, so it does not matter if one is known or not known directly. Personality is not a requirement for serious music production and they should remain separate. When the cult of personality displaces the importance of the creative process, problems begin and degeneracy unfolds.
How did you stay so true to your creativity?
To never compromise their original creative vision and amplify its intensity over time. For it to be definitive, it must increase chronologically.