rc,
By what I gather, scales are just patterns, musical building blocks. Which implies that thay are NOT pieces of music by themselves.
No they aren't, hahah. (RC imagines a great pianist onstage, "and now I will play the Bb scale... in contrary!)
So they ARE purely technical exercises. At least by my pov. "Easy" is good, but I don't find musical value in "clean" at all! Further, I don't hear that in any music, but if you give me recordings of exercises maybe I'd have an idea. An aural idea of the sound is what I need. Talking can only do so much.
Well, like I said I've found some problems with my (impatient) way of practicing. I would be too embarassed to show off my mistakes

But, I think any recording would be a good example of clean playing, I haven't encountered any recordings of sloppy playing. I think of clean playing as sort of a prerequisite for expression, the less sloppy it is the better the expression can shine through.
Two examples immediately come to mind. The finale of Beethovens first sonata in Fm, there's a line that's just a descending scale. I love that piece so much, it's always popping into my head.
Or Mozart K545, bars upon bars of scales. Then many sections are just broken chords.
The chords and scales aren't the piece. But they are a piece of the piece. It's possible to imagine some expression into them, like it's just been taken out of context from a beautiful piece of art. The feel of a minor scale played ff is different from pp, like brazen and sneaky.
But even just taken for what it is, I find a certain beauty in clean and easy playing of itself. From that point, the variations are endless. Scales in 3rds and 6ths are seen all over the literature.
My idea of music is like waves. Not static, always going some direction. Even if you give me a score with no dynamic markings at all, for sure I'll do some variations. For starters, accents on some beats, usually the 1st of every bar. Then slow down and get softer at the end usually.
The first few months I learned pieces, and not much exercises. So that is how I play. I can play melodies, but not scales.
In the end, I guess if your heart isn't into it you probably wouldn't get anything out of it anyways. I find them useful and engaging, it would be worth it to try them a bit and just listen for what could be improved in how you play them... But if you're not into it, I suppose that's no big deal. Maybe it's not for you, or maybe not
yet. I had to reach a point where I began to embrace the practice, and maybe there will be a time in the future when it's no longer for me.