I have not read the article.
There is a valid discussion to have about not only how often you go to the toilet, but about access to one, and perhaps also access to one you feel comfortable using. Unpleasant work place toilets or ones that can be used by men and women can be a barrier to using them, which may have a health impact.
Working from home at least part of the week where your toilet is clean and you are comfortable using it may have a hidden benefit to your health.
The observation about gaming and 'holding it in' is well made too.