It also seems like the value of quality tutoring that doesn't primarily function as social/class signaling goes down as tools capable of automating high quality intellectual work are more widely available.

It depends on outcome again: is the value of tutoring the social class elevation, or is it in the outcome of becoming more skilled and knowledgable?

There's also the deeper philosophical question of what is the meaning of life, and if there's inherent value in learning outside of what remunerative advantages you reap from it.