At least on AWS it is kind of hard to get 40 tiny VMs with sufficient speed on the infra side. Given that laptops get 40+ vCores these days, I think a single instances od anything should have some multi threading.
> The Dragonfly benchmark runs one Redis instance on a 64-CPU machine and compares it with one Dragonfly instance on the same machine.
They were not running 40 tiny VMs!