Scale is really where things start. Small communities can be taken care of, and frankly they tend to be more fun. Big ones go off the rails quick as more things have to be automated and delegated.
Our community EXPLODED after some viral TikToks in March 2020, and for the first time in almost a decade we had to start implementing new guards against bad behavior at scale (automatically muting new accounts that join with VPN's, for example). Luckily that's mostly died down, and only the good-faith folks have stuck around!