Following general discussion last week, I've pressed on in trying to develop a strategy for dealing with the worst excesses of userboxes. Focusing solely on attack templates--whose sole purpose is to disparage their subject--I performed some test speedies yesterday.
http://en.wikipedia.org/wiki/User:Tony_Sidaway/Attack_speedies%2C_2006-01-10
There is considerable support for most of these deletions, but significant resistance, and I'm not presently clear how firm that resistance is. Some of the templates have been restored, usually in a somewhat toned down form.
The discussions are taking place mainly on:
Wikipedia:Deletion review:
http://en.wikipedia.org/wiki/WP:DRV#More_attack_templates
Wikipedia talk: Criteria for speedy deletion
http://en.wikipedia.org/wiki/Wikipedia_talk:Criteria_for_speedy_deletion#Att...
Policy discussion is perhaps a little premature, but there does seem to be substantial consensus that some templates at least should be speedily deleted as attacks, perhaps by extension of an existing criterion for speedy deletion that is currently applied largely to articles.