being associated with HoloLive could give budding creators the boost they need to get further paid work, most likely from HoloLive itself
literally many, many such cases, all the way back to Smol Ame, and KayYu is going to eat well after proving himself with HoloCure if he isn't hired by HoloLive directly to make games for them
"actually they should pay me instead" is always something that sours me on a creator, even if they don't say it directly, it comes off as virtue signaling for the sake of virtue signaling
that, and targeting FUWAMOCO is, as these people say, "not a good look", because I'm almost entirely positive there is no ill or malicious intent on their end to begin with