I absolutely believe that I can Google for a sentence and find that many people have written that sentence. I am sometimes proud of myself when I come up with sentences for which that isn't the case. I'm not sure that you've demonstrated that I should have declared my residency as lunar.

Pointless answer. The fact that there are many articles making the argument that "everyone should be in therapy" means that this is not some outlandish and never heard of opinion like you imply, but rather a well established one that you weren't, somehow, aware of.

People can make up their own minds about the implications of me not having heard of something. I'm simply providing the data point: this thread is the first time I've heard someone say "everyone should be in therapy". That doesn't make a lot of sense as an argument, either, so I'd be surprised if it was all that prevalent a belief. But who knows?