>You only need one bad actor.
If that's your threat model then you shouldn't use any SW in exitance, FOSS or otherwise. In fact you shouldn't even go online, or even outside you own house, since one single bad actors exist everywhere. You can walk down the street and suddenly someone in a car runs you over(witnessed myself). And yet live goes on.
Of course. I never said life doesn't go on or it's a worthwhile risk to care about, not sure how you got that from my comment.