Afreeca culture sucks. I've seen a few comments in this thread saying "oh even small streamers make bank on afreeca" yeah thats because of the culture. The things you are expected to do as a BJ to your biggest donators are stressful. It's the main reason a lot of yeocams even went to twitch in the first place, and even after the shutdown went to chzzk.
One of the biggest cases I've seen is probably Winter. She left Afreeca for Twitch because she couldn't do those things anymore. She even explicitly explained it in her platform move message.
On Afreeca the CEO controls the stream not the BJ, you are basically slave to whatever they request. If you don't you lose a lot of money, but the biggest thing they lose is their reputation. If you stop listening to your CEOs and what they request you basically get blacklisted. Smaller BJs are easier to exploit as a big donator because they are more likely to comply with what you request in order to keep the money flowing.
That is probably the biggest complaint with Afreeca. Also the chatting on Afreeca is pretty bad when you really get down to it. Twitch isn't much better but since Afreeca is yeocam centric it's definitely worse. It can do a lot of mental damage to them.
On Twitch, the streamer controls the stream, you are allowed to do whatever the hell you want concerning your community. Of course, a lot of yeocams like to stay within some similarities of Afreeca, but the biggest difference is that you don't have to worry about doing 1:1 private chats, or 1:1 dates on Twitch.
Chzzk is basically a Korean carbon copy of Twitch granted it has to work out some kinks and shit, especially for foreign viewers. So the community transfer from twitch to chzzk is like 1 to 1, and that means the culture is basically the same.
I will say that some twitch streamers that moved to Afreeca managed to keep remnants of twitch culture alive in their communities, but we'll see how that pans out in the future. I highly doubt they'll be able to keep it that way.
Anyway that's basically what every yeocam has contemplated when deciding what platform to go to. Lilka, Hankyung, Haxxnini, and a lot of others have all said the same thing.