Seems pretty obvious, that facebook is building up a line of defense against competitors. Facebook has gotten a lot of pressure in the last 12-18 months, partly induced by the influenced US presidential elections through FB advertisement.
People around the world even longer ago started to recognize, that facebooks' content makes many users feel so called "facebook envy" described further in this article by Peter Walker from Independent.co.uk.

Facebook is making us unhappy and causing people who suffer “Facebook envy” to be particularly depressed, a study has found.

No big news.
In addition facebooks' users have more and more become the platforms' product, selling the users' data and attention to big incorporations, scammers and soldiers of fortune.
Evidence for that is provided imho by facebook's initiative for 2018 to change their news feed Algorithms selecting the content provided to their users.

Zuckerberg on that:
One of our big focus areas for 2018 is making sure the time we all spend on Facebook is time well spent.
...
But recently we've gotten feedback from our community that public content -- posts from businesses, brands and media -- is crowding out the personal moments that lead us to connect more with each other.
...
We feel a responsibility to make sure our services aren’t just fun to use, but also good for people's well-being. So we've studied this trend carefully by looking at the academic research and doing our own research with leading experts at universities. Source

Sure enough these are steps towards the right direction. Facebook has good reasons to initiate measures against those sammers and soldiers of fortune to not loose their most valubale resource.
But at the bottom line I would take it with a grain of salt, since it stays a centralized platform highly commited to the interest of its' shareholders and the advertising/content industry.

My personal opinion is, that facebook is drifting towards the void of irrelevance caused by their past strategic decisions and they are feeling it very well.