what would be the point of using ID's if slug has to be unique anyway
unless you mean using it for those blog posts that have the same original slug and then just using additional unique slugs to distinguish between those
but then that still seems like doing more work tbh
unless using
/blog/slug -> /blog/id redirectidk maybe I'm overthinking this, I just have my thing setup in a way that slug = name of the file in a folder so maybe I'm just not taking into account how other's setup their sites lol