I can only speak from my experience. My T has had yrs of her own therapy. So any issues she has have been resolved.
She also has a full life away from the therapy room. Her needs are met outside the therapy.
Plus her reason for becoming a psychotherapist was ignited when training as a teacher, she witnessed a child with. Obvious issues hiding in a cupboard at Sch and the teacher she was sitting with in her training just left him in there. She decided then and there she'd rather be with that boy and others like them than be the one who ignores.
I'm sure there are T's that do the things you've read about.
But I don't spend my life looking for wrongs. If sombreness wrong. I move on. I prefer funding what's right and doing that. Life has people in all professions that are less than good enough. Look at the teacher in my reply.