Your post is an impressively accurate description of what this sub is like. A significant number of F4M posts on here actually aren't legitimate and are just some loser with multiple catfish accounts. As for the ones who aren't fake, there is one in particular who I'm pretty sure just posts here to farm social media followers - you will get a copy and paste reply to any messages you send which may not even contextually make sense but links to their instagram etc.

But in saying all of this, many people on here are actual decent people who do have a lot of messages to filter through - a lot of which are likely to be creepy and weird af. Most people would find all of this a bit overwhelming, especially if they are new to reddit or r4r and will consequently delete their post or their account, hence the ghosting. This is my best guess as to what seems to happen a lot around here.