I don't know if one in English normally refer to Hitler’s book as “My Struggle” or its original German name “Mein Kampf”, but at least in Mr. Knausgårds original Norwegian book name “Min Kamp” the reference is very clear.
One of his good friend when talking about this, mentioned that it'd be more appropriate for him to title the book then "My Struggle". (Everyday mundane life is a battle field. Inside, we are all more neurotic than we all present to other people? Retreating to a refuge as Peronist regime is more a fantasy when our personal Stalingrad already happened, when what is inevitable and predictable: standing on the Berlin Furtherbunker stage when the curtain falls.)
His editor initially said that it'd be impossible. But after a few weeks, recanted his decision and went ahead with the book title.
Perhaps he is trying to reclaim this pattern of words from its association with Hitler? Or maybe he is being deliberately provocative or perhaps ignorant?
So to answers OPs question. Yes, I find the title strange (it is pretty controversial). But also, the title is descriptive and relevant (my opinion).
Full disclosure: I am huge fan of Knausgård :)