I've contemplated writing an email to RMS asking him how he feels about the use of GNU software in military and surveillance systems and if he could do it over if he would do things differently to alllow users to put a clause in their OSS licenses that forbid such things.
He's already written that essay. It's more rhetoric than substance, but his position is clear. https://www.gnu.org/philosophy/programs-must-not-limit-freed...
IIRC that has been discussed many times & can be definitely found in mailing list archives.