Freedom from what? Good security practices? Open source does not equal security nor freedom. You're pedaling digital politics instead of fact based privacy and security. Trust me I'd love my apps to be open source but ignoring blatant security issues is going to put someone at risk. You can't have privacy without security and vice versa.
edit: like I mentioned previously, use obtainium and you can still use open source software
As far as it being against signals tos, molly exists and had not received any problems from the signal foundation to my knowledge, discord has the same clause and they don't seem to give a rats ass. Sure they could enforce it but they don't, and personally with how matrix clients are handled they have mixed security, fluffychat has security issues ranging from outdated SDK versions to quite literally ddosing homeservers because of a non-existent rate limit.
The crypto stuff wasn't great but you know what's cool? You don't have to use it. Simple as that. You don't have to engage with it and you and I both know that. It's buried in settings and you have to find it yourself.
Signal is not an anonymity tool, and has never been advertised as such, if you need anonymity, signal is not a good choice. You can make it more anonymous by using a burner phone but that's a different topic.
If everything is encrypted, what could Amazon tap? You do realize sealed sender and PFS take away any trust from the server correct? It's all encrypted, your aren't trusting the server at all, it's completely trust-less, and unless you think Amazon or governments can at this very moment tap any encrypted data and decrypt it, I would recommend taking a walk outside and realize that no one, NO ONE can decrypt current encrypted standards.
Unless you can point me to a reputable article showing in great detail that signal is lying about their e2ee claims then I'll rest my case. Signal has been proven time and time again to not have any data on their users except the minimum required for the service to work, that's called integrity.
Also there will always be someone you trust on the internet, nothing will change that unless we completely rethink how the internet works.
Edit: added quotes Edit 2: added extra info