You're missing a handful of the most renowned e2ee apps.
If that's not bad enough, you've listed examples known to be sharing consumer communications, like WhatsApp and Telegram... and FACEBOOK??? You have GOT to be joking!! I won't even buy a phone unless I can uninstall the Facebook spyware off of it, and use the SlimSocial app instead.
I've.. lost a WHOLE lot of faith in you and your entire publication from this one article. I'm not exactly sure how anyone could redeem themselves in the security industry after publishing something this irresponsibly, and leaving it up.