If you changed the hashing function so it’s harder to invert, you could just hash the old hashes with your new hashing function so people don’t need to make new passwords.
That might not be the only reason. The Reddit code base might very well do hashing in a complex way that they don’t simply want to carry over.
If you changed the hashing function so it’s harder to invert, you could just hash the old hashes with your new hashing function so people don’t need to make new passwords.
That might not be the only reason. The Reddit code base might very well do hashing in a complex way that they don’t simply want to carry over.