Given that the mountains are backlit, a subdued contrast is actually more believable.
If anything, I would slightly darken the mountains (by ⅓ or even less) and slightly (again, by ⅓ or even less) lighten up the sky. The result would be a slight increase in global contrast and a more believable scenery overall. Just a thought, not criticism.
Constructive criticism is always a good thing. At work, we've used it all the time.
I think there is no right or wrong. I often edit pictures by heart rather than by brain.
It may be snow covering the mountains or higher position of the sun which make the mountains lighter. The raw file was quite closed to the final picture in this regards.
I really appreciate the comments.