Oooooh this is a controversial one. Quite frankly, I don't think there's a PvP'er in the game who does not want new people to join Feast, because we all want to see the community grow ... That said, Feast is ranked. Getting new players consecutively can cost you your standing. New healers, in particular, are the bane of ranking up, because they almost always lose their matches, especially against higher ranked healers. For that reason, new players are often discouraged, or outright hated, when they join Feast. That's also partly SE's fault, because the matchmaking is absolutely awful and pairs high rankers with low rankers, even when it shouldn't.
That said, I wouldn't let that discourage you. Join up. We need more players, and you're only going to get better in Feast by playing Feast. Also, you pay your sub just like everyone else, so the game is there for you to try out. Give it a go and to hell with any haters you get. Just makes sure that you actually try to learn from your mistakes and try to improve. Most PvP'ers are more than happy to help a new person if they actually show sign of improving. If you keep making the same mistakes over and over, however, then they are far less tolerant of seeing you in consecutive matches.