@aiono @lunarloony @nina_kali_nina yes I feel you. There's always a trust component. Indeed there have been nasty exploits in open source as well. Remember xz?
Alternatively you would need to build everything yourself. But then there's the "competency" issue. I am just not competent enough with encryption to be sure that I am implementing everything correctly, and not introducing possible exploits. And there's the "time" issue as well, of course. So I choose to trust the devs.