OK so if your tech-inclined friend sets up a Signal server, for little to nothing in return, that's automatically more trustworthy than a multi-billion dollar c

OK so if your tech-inclined friend sets up a Signal server, for little to nothing in return, that's automatically more trustworthy than a multi-billion dollar corporation with an ingrained and (seemingly) solid attitude regarding NOT selling user's data? I roll an OwnCloud server for me and my family, and I know that I'm not invading their privacy, but I could very easily do so and not leave a trace of my having done it even that a pro user could find, let alone a layman. To say that Apple is less trustworthy than a given power user solely because they use closed source is ridiculous, there is zero correlation there.