A speculative piece with zero substance. It focuses too much on whether Facebook is still cool (it isn't) and that it is heavily criticized at societal level (it is).
That does not automatically translate to weakness, decline or a full termination of the service. All of this may happen, but not a single meaningful or impactful piece of evidence is delivered to substantiate it.
A quote like "Facebook is for old people" could have been made 7 years ago. It has been true for a long time, but all meaningful metrics since then are way up, not down. Plus, you know, there's quite a few "old" people in the world, and they have political and purchasing power.
The US-centric take on Facebook is also limiting. In quite a lot of (developing) countries, Facebook is the ruler. It's used for everything, all day. And unlike the West, many cultures do not think its "uncool" to mingle with parents. They don't have a dismissive or hateful relationship with the elderly.
Only 1 in 9 FB users is from the US, yet the entire basis for most of these type of articles is to just forget about the other 89%.