There are some valid points made on here by the OP and those with a similar mindset, there are some equally valid counter arguments (apart from those who just dealt out "witty" homophbic abuse rather than adding any actual value to proceedings).
For me, I will never completely cut Anthrax out of my life, I don't think I could if I wanted to, however it is fair to say that I now regard myself as less of a rabid Anthrax fan than I have at any point in the last 17 or so years.
I preferred Bush and Bush-era Anthrax to the Belladonna era, that much is true, but I'd already resigned myself to Jon's departure ever since the reunion tour and was ready to push on with Dan Nelson at the helm (really enjoyed the one gig I saw with him as frontman at London's ULU). When Nelson was canned and Bush returned I hoped for the return of their greatest line-up, but as time ticked by and no announcement was forthcoming about his permanent return to the fold, I assumed the worst. And so it came to be and Jon left.
If a new singer was coming in now, I'd have an open mind and be ready to give the guy a chance but with Joey...I simply can't. This is not because I thin he isn't a good singer (he is) and not because I prefer Jon Bush (though I do), but because of the following two key reasons;
1) When Joey was thrown out in the first place, Charlie and Scott were widely quoted as saying part of the reason was that their music was developing in a new direction and Joey's singing was holding them back from being able to move in that way. I love Anthrax's material from Sound Of White Noise onwards and think that was when the band hit their peak artistically. It makes me fear that Anthrax will now be forced to go back to trying to rehash their older style just to accommodate Joey's vocal limitations and what we'll hear is a bunch of guys in their 40's trying to imitate the music they made in their early 20's! I don't want to heat the band lapsing into self-plaigirism or worse still self-parody and nor do I want to see a band that merely trots out their greatest hits on an infinite loop with nothing new to offer.
2) Joey simply can't do songs like "Only", "Room For One More", "Inside Out", "What Doesn't Die" and so on justice. Will Anthrax even play these great songs from the 1993-2003 era anymore? Are they lost forever as Joey can't or won't sing them to the required standard if he sings them at all? If so, how can I pay good money to go and watch a band knowing that they will play hardly any, if indeed any at all, of my favourite songs by them? At least with Bush and Nelson you had guys that could sing the tunes from all eras of Anthrax's history.
In conclusion if and when they put out a new album, I'll buy it and give them a chance and the benefit of the doubt. But I just won't be as enthusiastic as I would have been if the new album had Nelson's, Bush's or even another great new singer's vocals on it.