None of this is a scientific analysis of the situation so I’m not sure how we’re supposed to take away a lot from this. Obviously it’s not really a therapist’s job to conduct a wide reaching study. Even keeping that in mind, it comes across as a baseless hot take.
It’s already got one major bias built into it: happy couples don’t go to therapy.
Why are you posting this to very second comment? What do you mean by "actual science"? Like it's not based on chemistry? Boy, have I got a surprise pharmaceutical industry for you.
It seems you don't have a good understanding of either "therapy" and "science"
Calling other's ideas "hot air" is just the cherry on top.
It’s already got one major bias built into it: happy couples don’t go to therapy.