Concerns about the value of the research domain
I cannot possibly agree with the currently most upvoted answer by Pete L. Clark. I clearly cannot comment on the particular subfield that OP is asking about since I know nothing about it. 

However, daily I see stillborn research papers --- they were conceived not to dispel the ignorance, but to be added to a CV. There are definitely research communities that are mired in posturing, complexity and obscurantism.

On a personal level, it does not matter whether the field in question is one such area, or whether the OP lacks the background to see how this field adds to our knowledge. It is impossible to do good research without seeing the goal. So, action is necessary.

I suggest talking to the advisor, and gently asking these questions. If the answers are not enlightening, change field/advisor. Doing otherwise is a waste of OP's time.