I'm going to respond in two parts.

On the subject of Alex the Serb's homenode in particular: it's crude. It doesn't especially bother me, but it obviously bothers you, and it probably bothers other people as well. If it were up to me, I'd probably leave it (and more specifically, the image) standing, but I wouldn't be particularly sad to see it go (and given the disclaimer associated with the edit-user-info image upload box, I see no obligation for the Powers That Be to keep it around).

On the subject of drawing lines and anti-anti rules: no bloody way. That way lies madness and unintended harm, because there's no way to codify a decent (heh) community standard in a couple of rules. At the very most, we might need to extend consideration to homenodes, if people start to complain about arbitrary censorship. Consideration keeps the community at large (especially if a particularly pungent node is roundly discussed in the chatterbox before being considered), and adds a level of accountability; I think those criteria are perfectly reasonable if we start yanking content from home nodes.

As for limiting anti-foobar sentiments to the case where foobar is technical: what makes technical holy wars any more sensical than non-technical ones? Since when is the vi-vs-emacs flamefest objective, for instance?

Community-based oversight I can cope with, but if we start imposing black-and-white rules on this monastery's content I will leave and never come back.

Update: After a fair bit of thought, I upvoted Juerd's node. Dammit, we need this sort of discussion to keep Perl Monks a good community. Self-examination is good. If you don't agree with him, reply instead of downvoting.

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:wq