I would rather use Magic Wormhole if I have to have an intermediate server operated by somebody else.
Your protocol isn't documented enough to allow interoperability. It is important for folks to be able to develop their own clients and frontends; the ecosystem becomes richer and more resilient to attacks when there are many different implementations.
I'm not sensing an awareness of capabilities. Access to a file is one of the classic examples of a capability and a file-sharing system should be oriented around ensuring that references to files are unforgeable and copyable.
The terms of service are unacceptable and I won't be trying out the product. I can point at exactly what's wrong; talk to your attorney for details.
Users are expected to respect the intellectual property rights of others when using the app.
You don't understand what file-sharing technology is used for.
We reserve the right to introduce tools and technologies for monitoring the performance of the app and improving its functionality. By using the app, you acknowledge and agree to this potential monitoring.
Ah yes, because telemetry has never been met with user backlash.
The company does not collect user data, apart from what is needed for monitoring tools to ensure the app's stability and to make improvements.
You don't need user data for that. Y'know what's a lot easier? Just don't collect user data!
We may also use Sentry.io for error monitoring and NLevel Software for analytics.
I block those.
The app may include functionality to report users, and we reserve the right for this functionality to send necessary details for any investigation.
Ah yes, completely fair that somebody accused of misbehavior gets their local data exfiltrated too.
Meanwhile Magic Wormhole merely tells us that it is MIT licensed and we can do whatever we like with it.
Why not? What tone would you take if you wanted folks to regret posting unpaid advertisements?