You had better believe that when artists get a commission, the patron gets a say in how the work looks. When you are in a band or ensemble with other people, they also get a say in how "your" part of the music sounds. This is the same for code. Code you create with and for other people isn't really your creation in that way: all of it is a collaborative effort.
I don't think that really changes anything, just restricts the effective criticism to that specific part that you did. Though I suppose the more it's intertwined the less it matters. I don't think anyone really cares about that one function in the company codebase that's been rewritten 20 times by different people, and far more about that part of the game they coded themselves at a gamejam.
There's always external influence, but if you're involved you obviously added something and in most cases it can be scrutinized on its own merits.
To rephrase, criticism/review of your code doesn't reflect a value judgment of you as an individual any more than an artist's patron asking for more blue-ish tones reflects a value judgment of the artist. The patron doesn't think that you have any moral faults because they want more blue, they just want more blue. The same goes with criticisms of code.
