Nevertheless, from time to time I do suggest A, and my peer suggests B, and even though both are functionally equivalent, I find the choice of B to be of “poor taste”. This is highly subjective, of course, so convincing others is rather a futile exercise. At the end, I tend to go with B, but I don’t like it.
How do you deal with such situations?
On the other side, I never ever leave code review comments that are subjective.
And if you have retrospectives or can talk to the lead, maybe raise the issue of these types of comments and how unproductive they are to see if new team guidance can get things on a better path. Perhaps bring in guidance about code reviews from a source people might give credence to such as google's review guidance.