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You are not arguing in good faith.
I have linked multiple times to the docs and to the GitHub repository of flatpak.
Now how about you link to something useful in the docs that proves your point or maybe just a random article as source to your misinformation.
Here are the different methods of uploading to libgen. The forum (you need to make a throwaway account) is online at the moment.
If you don’t want to do that, just wait a bit for libgen to come online again.
SLUM: The Shadow Library Uptime Monitor
For an uptime overview.