Yeah, it kind of sucks for people outside the US, but really editing manga isn't that hard. I'm currently the main cleaner for Stone Ocean and I did the cleaning for that SBR chapter, and I've never done manga raw cleaning before JoJo Project. I admit I'm not perfect and that there are definitely groups who do it better than me, but it's not nearly as hard as you'd think.
After all, that's how projects have to start. Someone has to stand up and say "Hey, instead of wishing someone would do this, I could do this myself!"