I'm in a number of groups about cats as I have an elderly one with a number of health conditions.
A significant minority of the posts, however, are "I've just had a baby, does anyone want my cat?" and "we're moving to Australia, if someone doesn't take my 15yr cat, I'll just have to put her to sleep".
Literally is it news to people that in these circumstances you contact a rescue? Not rehome on social media to someone who's potentially just passing it to a bloke to train his XL Bully.