I currently use Telegram for my friends and family, but have reluctantly come to the conclusion that the UK Government is either reaching agreement for backdoors with messaging services, or is trying its hardest to.
I’m also on Element/Matrix. Before I try to get my contacts to join me on there, should I be aware of any privacy issues or is that a good place to head?
As long as you onboard them with the ElementX/SchildichatNext(better fork of element) mobile client, their experience and setup should be fairly future proof. Its still changing and growing for sure but the most important stuff is finally working now and the new call systems is a huge improvement.
But yeah if you want zero metadata, your only choice is P2P stuff like Briar.