I suspect that you have some amount of experience that allows you to just do many of these things intuitively (possibly in your head without writing them down). For a beginner, I think it can be helpful to have a detailed procedure to follow that takes them from start to finish. That way they can focus mental energy on the problem at hand while not having to worry that they may be working through the problem using a method that is inefficient or that may never get results.

I really don't think it's the physical process, but the kind of detailed analysis of your problem and the requisite thinking to form a solution that the described process requires.

Good OO programmers do some internal version of this process every time they design a class. For those that have been at it awhile, this process is probably so internalized they hardly even notice it. The OOP equivalent of muscle memory.

For example, the value in "underline and review the nouns" isn't underlining and reviewing the nouns, it's a physical manifestation of an important step in the OO development process. Namely, helping to identify requirements.

Have I ever gone through such a tedious process when designing a class? Of course not, but the steps outlined in the answerer's post take place in some form internally every time I need to design a new class.