Signal on the Google play store isn't FOSS but it facilitates the delivery of notifications to the user. The protocol itself is open source and notifications are handled securely even with Google play services on the phone. If you want a FOSS version, use the APK on their website, it has an auto updater.
Molly is only available on Android, as far as differences it is a hardened fork of signal with an encrypted database, what that means in practice is even if someone was actively probing your phone to try to gain access to messages they wouldn't be able to due to the encryption. It's very useful if you are an active target or you don't trust your phone os to play nice. I personally use it myself and really like it but in general it's not terribly different.
I don't see an issue as signal is designed not to trust the server. Signal also uses sealed sender and Perfect Forward Secrecy, which is something almost all e2ee messengers lack. What it means in practice is signal leaks very little if any metadata, if you leak metadata you give away details about who your talking to and for how long, etc. Examples might include talking with a suicide hotline, or a doctor, maybe a customer service agent at a company and for how long. Those details will give a lot away about you, even if the messages or calls themselves are encrypted. Matrix is not recommended for communication because it fails to properly hide metadata and actively trusts the servers. When you make a call on signal, as long as both users have "Always Relay Calls" set to disabled, your calls will be peer to peer instead of trusting a central server to facilitate the connection and trusting a middle man. What this means is since the connection is peer to peer you can leak your IP address to the user you're talking to, however a VPN fixes this issue.
Once again, I'm still trying to figure out how apple users can defend this. Yes, Google maps had this feature, but everytime I talk to apple users I'm always told they got their phone because "it just works!". But then I learn that features I consider basic at best are completely missing. If my iphone should "just work" I expect the features I want to exist without another app installation. Things on iphone only seem to work if you don't know anything better.
I hate to say this, but this is a blessing in full view. If people want the "freedom" to not take a vaccine because "risks, 5G mind control, whatever" then let's let them. Life is full of risks and they need a wakeup call.
I feel like Google has two departments internally, a security research and implementation team and a Google ads team. One of them betters security for all android users and another gets bad press for making bad decisions with YouTube, chrome, or other Google services. I'd love to know how the culture is at Google. It's not like security conflicts with Google data collection practices but I still find out interesting to think about nonetheless
Printers print very small dots on the sheet of paper you print so it canbe identified. https://en.wikipedia.org/wiki/Machine_Identification_Code
You love to see it, I genuinely smiled, probably not the normal reaction for most people but it makes me happy to see people use signal.
This makes me wanna get my Sony DSLR and start taking photography lessons again, this is awesome!
Pertaining to the signal issue, as with anything, if you and I can use it, so can corrupt politicians, drug dealers, terrorists, and more. Signal is a great tool but it can be abused like anything else
edit: I'm not saying what these politicians are doing is okay, I'm only mentioning this just in case someone is anti-encryption, encryption is good and any political figure trying to outlaw it can go fuck themselves
Okay great, if I live anywhere besides NYC, where's my damn train for transport? Oh right its nonexistent. I'd love to take a train but the people that run this shithole say its too expensive and continue to pave more roads! Wow I love living here where my government continues to listen to big oil and destroy the planet in the process!!
The main issue with encrypting the database using Molly's setup is you'll miss notifications and calls until you unlock, this might be able to be fixed using a different database encryption setup but as it stands it would be inconvenient for many.