This is to say that whether you are writing your paper with an apa style or whether you are writing a cms style paper, you must give a very good statement.
Again the type of writing you are doing does not negate the thesis statement.
It may explain what you mean by "counterproductive" or on which aspects of productivity it has a negative impact. You should strictly sidestep subjective assertions of any kind in the academic circles altogether.
Your thesis statement is the opinion you should enforce.
There is no doubt that the most important parts of the thesis lie in those subtle areas that the laymen may not pay much attention to.
It is not wrong to say that the abstract of a thesis and the thesis statement are the most important parts of the thesis due to the type of work they do in the text.
Or, to be more precise, it is where you support it.
It is also essential that you refer to it in each of your body paragraphs.
Typically, it goes at the end of your introductory paragraph, which is usually the first one in your paper.
If you are working on a complex assignment with several opening paragraphs, placing the thesis sentence near the beginning of your paper is what you should go for.