Their clients are open source, unless you are worried about the NSA being better at decryption than is currently thought possible, the only information you are giving is encrypted traffic, who you are, who you sent a message to, and if their press release are anything to go by, they are trying to muddy the waters of the identification part with moving away from phone # account creation. I’m also a proponent of xmpp for a similar reason, and I think that xmpp is the better protocol, but signal has more concessions to non techies

That aspect is above my knowledge, I would be searching the same things you would be.

I would recommend making the switch in that case, qbittorrent is open source which both allows you to verify that the program is working securely, & probably accounts for the reason why the advanced features aren’t available for bittorrent

Why bittorent over qbittorrent?