From internal leaks within the company as well as external analysis, the tip of the iceberg behind Facebook’s spyware empire is exposed. Take a look to better protect yourself when you’re not even on the platform: https://simplifiedprivacy.com/facebooks-corrupt-off-platform-surveillance/
They have a point, if your run noscript on firefox or trackercontrol on android, almost every website has a facebook script trying to glean data. Dumping facebook is only one step in removing facebook from your life