I'm single and on dating apps you start convos with lots of different people, then hopefully some you have good chats with and progress to a date. Others you realise from their answers you don't have much in common, they just send rubbish short responses or they aren't someone you want to date. Stopping replying after a couple of messages isn't ghosting, it's just seeing who you might want to go on a date with.
Once you've arranged a date/met someone in person, if they then don't message or ignore you, that's ghosting (and is rude!).
I get fed up of people (mostly men) moaning about ghosting when they mean the first one! AIBU?