>Getting committed by a therapist you are seeing is very rare

There are many very rare things people take extreme precaution to avoid.

>Would you want it to be impossible to commit patients without consent, and risk more people committing suicide?

But more people would see therapists and thus less people would commit suicide overall. The choice is between a lower total suicide rate or a lower suicide rate in a subset which therapist are exposed to. And I'm not really surprised therapist opted for the one that is directly more visible.