I first heard of the Mudcat from a friend who obtained some lyrics for me. I first visited, as a GUEST, when I was seeking a particular song, with far too few clues (no title, no first line, no chorus, just a line or two in the middle and the name of the singer) and received the song lyrics with name of album and publisher, in about six minutes. I was hooked. I have been a member for years now, and I do support the site, bit by bit along with many others. I have learned much, have helped musician friends find words to many songs, have spent many glad hours. Had I been banned from experiencing that first taste, I would not have become a member.
Rudeness and flaming happen; did you ever read the sickening postings that turn up under news articles online? If someone is going to be a jerk, they will be a jerk; we more civilized individuals can preserve the dignity of debate and let the Max and the people he has entrusted to manage his domain, including the generally affable, interested, and hardworking Joe, manage as they will.
Yes, there are members who are at times abrasive. It seems remarkably difficult for some other members to simply ignore an abrasive remark. This is unfortunate as it has caused the demise of many an interesting discussion. Surely most of us have at least some experience in ignoring or working around individuals we do not get on with?

I am all for (1) being guest-friendly (2) encouraging guests who are interested in the music to become members (3) ignoring those who deserve to be ignored and (4) acting decently to all.