Telegram is not private by default, you may want to mention that. I would suggest Wickr, which has many more security features, and stronger encryption (same as Signal but also with perfect backwards secrecy) including the ability to delete your messages from other people's devices remotely at any time.

But the rest of your list is good! And even if I dont agree with Telegram 100%, it is 1000x better than facebook messenger, I think we can both agree on that! :)

Looking forward to more articles bro.

-Anarchistpreneur