I feel like we mostly agree with each other, we just don’t agree about the extent to which FOSS is helpful.

FOSS is a tool. Tools are useful, not helpful. People can be helpful. Especially with the right tools.

(although not trivial, critical vulns can still exist for years)

Because the amount of participants are trivial. If people took FOSS seriously and stopped paying billions of dollars to CS...

To me, you don’t need FOSS to build a (literal) guillotine, and you don’t need FOSS to spread flyers.

If you're using software to do just that, then I'm saying that you're wrong. If you're using physical fashions like crafting a club and having a fight with people who agree...

People don’t have open source hardware phones, running mobile distros of Linux

I do.

but not the solution in the sense of doing the work to achieve the end goal

Well, I AM saying what Richard Stallman has rouhgly in an extended elaborate fashion of much more profuse explanations and statements, that FOSS is necessary to stop CS from being respected let alone relevant to fucking anything digital based on an agreement towards respect for another human's life without knowing that person. Without needing to know anyone to make that statement. Even I agree with him regarding the subject to which respect is given to people I have the opposite of respect in history denoting such appropriate.