Also note that with Matrix, you have the option of running your own home server (or use one provided by someone you personally trust) and communicate seamlessly

Also note that with Matrix, you have the option of running your own home server (or use one provided by someone you personally trust) and communicate seamlessly with people on other home servers. The dynamic is completely different. Oh, and any/every device/client is a first-class citizen which means you can run it on more then one phone at the same time, or use it without a phone at all.