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Go ahead but I'm sure I can explain in much more technical depth than you... there is a reason I'm guessing you can't even figure out how to use GnuPG so you just rely on some hosted solution to claim they are keeping you safe.
You use Chromium, don't act elitist
So you think GrapheneOS is insecure? It uses Chromium for their browser engine, which was picked because it provided more security than Firefox.