There is a reason that people do that. They most likely put in the little bit of effort to research the fights on Youtube, or whatever they decided to research on. Most people don't even put in that little bit of effort. People can have any requirements they want, you can always make your own group, and if there is someone that is more experienced than you, you can always promote them to leader and let them take over. My suggestion, make your own group, find decent players, whether they're new to the raid or not, just ask that people at least research and put in the little bit of effort to look up strategies, and you should be fine.