Also, set up Tailscale with cheap VPS’ to use as exit nodes.
But its detection rates are questionable at best. https://www.youtube.com/watch?v=5Td_Ce1fiL0
Yes, I know that, and I tried porting it to PostmarketOS, but the build failed miserably.
If you don’t trust matrix.org, then you can self host the server yourself. Plus, the article you included is outdated.
What is LINDDUN?