This is a puff piece designed to puff up Telegram. If you look at, say, Instagram it is growing rapidly. Specifically to Facebook, the issue is 3 pronged:

- Disassociated Graph. The truth is the friends you had in high school and your family are all great but it is highly likely you don't share a lot of things in common with them. For example, your love for kayaking and the outdoors might resonate with no one on your graph. Instagram, and other networks like it, you build graphs based on interest. If your Instagram account is about the outdoors, it is highly likely everyone else will be outdoors people as well. That's more rewarding.

- Bad Content. Graph aside, the content is terrible. The feed is full with click-bait articles, and fake news. You actually feed bad after spending any time on Facebook because you know it is was a waste.

- Ads. A good chunk of your feed now is full of ads. Terrible ads. Instagram, for example, is a relatively clean interface.

I would say Facebook is clearly on the decline based on the above but to say all networks are on the decline is false. Instagram has proven otherwise and there will be other networks, in the same Instagram vein, that will grow quickly as well.

Lastly, all of these networks and messengers have one glaring flaw. They isolate you. President Obama touched upon this a week ago. They do little to connect you with your surroundings and I would hardly call any of them "social networks." They don't connect you to your neighborhood, your city, and the places you frequent the most. It is pretty shocking, but most Americans now only, on average, have about 2.5 friends they see regularly in real-life and most people don't even know who their neighbors are. It's sad.