Shadowlands we have a good group of players doing GSF, and yes we have a handful that mouth off when noobs are not playing well. But we are not all like that. Funny thing with GSF, you can lose a match but still get good cxp. We do talk to people and try to assist them alone the way. We have 2-3 matches happening at peak times. You group up in 4's to make it a little more bearable if you get new players. But we want the GSF community to grow and get bigger, not scare people away.
I will even pst new GSF players to see if I can help them with anything, and get them into the GSF chat channel to ask questions.
You cannot control everyone, but you can try to make new players feel more comfortable doing GSF. I want more to play so they will add new content, and expand into newer ideas.