Homebrew now runs `brew update` before every `brew install`, no? That's how it gets in the way, you just wanted to install a thing, and now you are stuck waiting for `brew update` -- which I feel takes longer than it used to?
(You also may be confused between `brew update` and `brew upgrade`. I know I often am!)
(You also may be confused between `brew update` and `brew upgrade`. I know I often am!)