Out of all the comments that use the term "master" as of right now[1-5], the first three specifically use the term "replica" while the 4th and 5th use the verb "replicate" (in the present tense and past-tense).

1: https://news.ycombinator.com/item?id=31341392

2: https://news.ycombinator.com/item?id=31341661

3: https://news.ycombinator.com/item?id=31340318

4: https://news.ycombinator.com/item?id=31340169

5: https://news.ycombinator.com/item?id=31342145

It wouldn't be better, it would be arbitrary