Well with Facebook for me it was more like a slow decline until I only used it for things I "have" to use it for. Whereas Reddit was a brutal, one day to the next cold turkey kind of thing.
I dumped FB after George Floyd. The stupidity of some people was just too much. I had Reddit but there is something to anonymity. I think I pay more attention to the content of the comments. I dunno. Maybe it's me.