Tsk. You're probably definitely going to be in the minority here as far as those particular opinions are concerned.
The biggest flaw in your argument, the idea that once real life money gets involved in something..., doesn't really hold up when it comes to Second Life. The vast majority of furries...hell, the vast majority of everyone...are on free accounts and never spend a dime on the game. These are the same furries who never spend a dime on hosting their godawful smut on free services like FA or VCL, and then have the nerve to bitch and complain when things aren't perfect. On top of that, the L$ is completely worthless. LL state directly that directly in their TOS - at any given moment, there could be a 'server error' and - poof - you're broke and SOL. If anything, people are taking more of a risk of going broke on SL than they are of getting 'griefed'.
Additionally, Prokofy Neva is fucking batshit insane and therefore anything connected to her immediately loses all legitimacy. According to her line of thought, we, here, on this tiny little internet forum, keeping to ourselves and merely reporting the absurdity of the outside world, are somehow 'griefing' and/or 'contributing to griefers'. What? And by extension, by posting here, you too have become one! OH NOES.
Anyway, I'm hesitant to speak ill of Anonymous, because Anonymous does not forgive. Is what they do 'wrong'? Perhaps, to an extent. When it comes to SL, I see it as exploiting huge gaping holes in a very flawed system. Blame not the hacker who finds a security hole; blame the admin who failed to patch it. In similar fashion, blame not the griefers for their flying dong attacks, blame the Lindens who are too busy raking in money hand-over-fist to bother implementing fixes that would prevent such things.
Oh and as your own signature says, Second Life is for people who can't handle the first. Someone who has invested so much time and real money into a poorly-rendered avatar's trials and tribulations in a laggy and buggy virtual landscape is obviously taking the Internet too goddamn seriously, and probably needs a nice long break from their computer.