You can say that about literally any app or piece of software, as a regular user you just "trust" WhatsApp to do end-to-end encryption, or websites to not read

You can say that about literally any app or piece of software, as a regular user you just "trust" WhatsApp to do end-to-end encryption, or websites to not read your email and try your password on other websites https://xkcd.com/792/ https://xkcd.com/792/ Mostly, in our use case, it's because students are already willing to open their camera to teachers, when they demand it, and this is actually considered a more effective and private "upgrade" for everyone.