I’m not sure what the “problem” is. This is how we expose drives to minimize errors in Roon’s storage management.
We recommend this type of mapping for Linux devices across the board, but it’s not what people do very often. We came up scheme that consistently places drives at unique mount points after seeing hundreds of issues related to storage mapping.
One of Roon OS’s goals is to is be opinionated. It’s part of what makes it work so well. I write a bit about this here and in subsequent posts: ROCK is very opinionated about the best way to run Roon.