The title is somewhat misleading (it's catchy, though), but I agree with your points and think that while email is still a great catch-all communication tool, there are better ones when you're actually trying to work in a team on many projects.
I certainly don't mean to be misleading. But, it definitely feels as extreme as completely banning email. At least for our team, all our past experience with hating email at a company was tied to internal email culture and the inability to actually do work.