As a retro enthusiast I am not on Facebook or on any social media websites except maybe this one. Too often these days there is an assumption that we have presence on social media.
Build your own channels, stop building in other kingdoms.
I don't have a facebook account, none of my family has a facebook account, none of my friends have a facebook account, most of my colleagues don't have facebook accounts.
As far as we're all concerned, if it's solely on facebook, it doesn't exist.
Next to zero organic reach in Facebook, so you’d have to pay to make sure your followers actually see it. Might as well post it on your own website, build an email list, let users subscribe to RSS - at least you own that and aren’t renting it from Facebook.
With Facebook you will always be a slave to their algorithm. It may or may not decide to show your updates to the people who subscribe to your feed. They may ban your account for no discernible reason at any time and trying to talk with support to get it straightened out is a nightmare.
Having a newsfeed on your site that also posts to Facebook is generally a better approach. Don't leave yourself at the mercy of a giant faceless corporation that doesn't care about you.
Asking without any bias, just curious if there’re any other reasons than what I already know…