To me it sounds like a cultural (or maybe this is just in my bubble) disconnect between psychotherapy as a medical treatment vs a consumer wellness product.
I can see that being the case. In countries where mental health isn't as openly discussed, the idea of someone going to see a therapist holds the stigma of that person being "not right." I know I personally held that belief before I started going to therapy.
Tying this back to your original post on the subject, I think a lot of the stress of the modern American work life causes a lot of anxiety and depression. Couple that with social issues, family issues, relationship problems, and that's a recipe for a mentally unhealthy person. Instead of turning to substance abuse or ignoring the problems, I think a larger contingent of people are seeking help for their problems because they may or may not have friends or family who have similar issues but handled them in a more harmful manner, and they do not want to follow that example.
This is all conjecture and speculation on my part, but I think the cultural differences have a lot to do with how people from countries outside of the U.S. perceive the mental health treatments provided by therapists. That, coupled with the fact that more and more people in the U.S. are becoming open to the idea that seeing a therapist is perfectly normal, I totally understand how it might look to a non-U.S. citizen.
I promise you that we don't all see therapists because we're crazy. Or at least that's what my therapist tells me.