Sure, but there is a marked difference between a therapist and an LLM Chatbot: you can't talk to your therapist for +4h a day, at any time convenient to yourself. It's also not a guarantee you're going to hit upon a therapist that is like that, versus a product that is very literally intended to maximise your usage of it.
a therapist should, if they follow their training, not be a sycophant whatsoever. CBT, for eg, is a multi-step process including Socratic self-dialogue, reframing practices, etc to guide the person towards the development of insight and healthier coping mechanisms
Any good therapist should train you in the methods of coping with and eventually overcoming your problem. This boils down to private grad+postgrad psychology/psychiatry course, because to cope+overcome you have to understand what's going on and there is no one who can do shit but you yourself.
But that is only ~half of job. The other half consists of gently reminding one that not all is lost yet.
There is no LLM that can do this and I think there never will be.