Using an all-in-one messenger like Beeper will always be less secure than using standalone apps because it can introduce another vector for attack. That being said, I believe Beeper is trying their hardest to stop “middle manning” your messages. For example, in their newest Android client they have an on-device Signal bridge which means your messages never get sent to Beeper’s servers.
Personally, I am happy with the convenience of Beeper. I use it every day with multiple IM services linked and it has saved me a lot of time. I also love that Beeper is built on matrix and that they’re contributing back to the open source community.
To be honest, I’m not sure what they were thinking when they released their reverse-engineered iMessage app. But I’m hoping they’re back on two solid feet and will get back to focusing on their original mission because it’ll mean more open source contributions back to the matrix project.
I’m not super excited about them getting bought, but at the same time I think it’s better than the alternative. Beeper’s CEO (now former after being bought) is infamous for creating the startup, Pebble, then running it into the ground by not selling it. As unfortunate as it is, the reality is that companies, even ones based on open source projects, can’t survive without funding.