Good to know! I was doing this with a hacky one-liner but wasn't aware of this flag. I think the sequential build/install process is the agonizing bit though.
I don't see where he said it's a bad thing, or even implied it. As I see it, he did imply that superlatives like THE FASTEST PACKAGE MANAGER aren't worth much in this environment.
Yeah, tbh homebrew is slow as fuck. It literally took 30 minutes to install aws cli on my 2020 mbp. I will happily flock to every new version that's faster.