Again, saying the background is blotchy is insufficient for the same reason that saying it is uneven is insufficient. If you don't like blotchy, uneven or whatever, that's understandable. However, to assume that blotchy is bad is no different than telling me the background is bright or dark.
If you explained that the background is distracting the eye from the subject, that would have merit. Even then, I would argue that a bright sky with a few clouds
for me is no more distracting and is actually more interesting than a plain sky with no clouds.
If you were a paying client, I could and would make the image according to your desires. Pay up and I'll prove it.