> The best tool in this space should eliminate the need of specialized PM.

exactly this, having a project manager drive tasks just erodes the sense of ownership in the team. the sense of ownership that comes from giving the responsibility to devs to manage their tasks directly is immense, especially during the initial years

I think the for fast moving teams, the eventual winner in this space is going to be someone who can transparently bring in product requirements and timeline requirements to devs directly than via some middleman