I agree in principle, but, for me, it all comes down to execution.

I used a product that implemented a VERY good AI chatbot as part of their email support and it was better than human support. It was nearly instant in its response time and answered all of my questions perfectly.

In fact, it wasn't until after the interaction that I realized it was an AI bot! Pretty good IMO and I'd prefer that interaction over holding "...because your call IS important to us."