Redhat could also decide that their about 10.000 lines of code writed to Linux kernel are retired from it, but it's not probable.

Telegram founder is a person that have donated 1 millon dolars to Wikimedia foundation at 2011 (when he turned 27 years old). Maybe he have evil plans for Telegram, but I don't think so. He talked in an interview about financing Telegram servers with donations and/or premium contents for Telegram.

If you get all people to your jabber server it will be ok for me. While you don't get it, I'd like to be in contact to my friends with a not perfect but better system. I prefer unprobable risks to actual problems.