privacy

Why trust a private for-profit company from the US with a closed source app, when you could use an open source non-profit like Mastodon instead? Obviously the answer is the larger user base, but you're definitely trading that for trust.

IMO, US-based for profit companies cannot be trustworthy, and even US-based non-profits have to prove themselves before they should be trusted (e.g. Signal passed every test thrown at them so far).