The assumption is that it will be, regardless of intent. Saying otherwise is absurd.
The assumption is that someone will come along and develop a frontend that ravages their bandwidth?
If that's truly your stance then we're essentially just done.
They do what they can but they don’t go anywhere because they’re not illegal.
Providing access to copyrighted content without a license is indeed illegal.
Not say to anything of actual torrenting software like qbittorrent or Stremio that have been around for years.
But we're explicitly not talking about torrenting. Is that why you seem confused?
If we're talking about torrenting the files and playing them, then we're back to my original comment about how music players already exist.