Fascinating article. It's think the author's experiences are fairly context-dependant, with where you live, the political leanings of your social circle, your online community etc. But I have noticed an increase in the pathologizing of normal human behaviours and traits. Maybe not all character flaws should be fixed.
You mention a resistance to pathologizing normal human behaviors. That could stem from early experiences where you were perhaps judged or misunderstood for simply being yourself by caregivers, teachers, or peers. If, as a child, you were expected to conform tightly to rules or suppress emotions, you might now feel protective of traits that others try to label or correct. Therapy can be a space where that defensiveness is explored gently, not to shame you, but to give voice to the younger parts of yourself that may have gone unheard.
This response sounds kind of effed up in the context of the article. I don't think everyone needs therapy, especially not if they're happy. Leave them be.