I won’t disagree that therapy and health in general is classist as a whole. However, it depends on how it was said I think.

If someone in a comments said go get therapy, eh. It’s comments.

If a family member, friend, or loved one recommends therapy that should be a warning light, that’s an acute thing happening. I would personally take that as “it is now worth the money to invest in yourself”. A followup of “why do you think so” is also appropriate.