[dfc]

   We preach that curl | sh is  evil because of a potential lack of
   transparency but rarely does anyone denounce the evils of binary
   packages.

This is "Freedom 1"[1] and a bedrock principle of the FSF.[2] Applebaum recently gave a talk "Free Software for Freedom Surveilance and You" about the evils of binary packages.[3]

[1] https://www.gnu.org/philosophy/free-sw.html

[2] Free Software is Even More Important Now: https://www.gnu.org/philosophy/free-software-even-more-impor...

[3] https://media.libreplanet.org/u/zakkai/m/free-software-for-f...