>only one master at a time and the slaves are not meant to be promoted.

So not like a historical master-slave relationship.

Master-slave may capture the relationship, but humans still have to read, write and interact with those systems.

Some of those humans still suffer from the legacy of slavery, jim crow and voter suppression.

We can come up with analogies and metaphors which arent so evocative and make working with systems more pleasant just on account of not flippantly referencing the darkest part of societies history.