You would still need to do it for every user, anytime you create a new one. I fail to see how that's any different from, say `echo "export HOMEBREW_NO_ANALYTICS=1" >> .bashrc`
Of course, the better alternative IS for it to be opt-in, which it should be.
.. makes brew responsible for it. There is a big difference. Some of us don't want to have to maintain yet another .bashrc file tweak just to have a safe and sane environment.
I hope the homebrew guys will pay attention to this issue.
What I want:
There, now I don't have to think about it any more, nor maintain a .profile/.bashrc, nor do it every single time for every user.