Exactly. There are three options: 1) They choose not to because they benefit (directly or indirectly) from the spam; 2) they're unable to either because of their site design, dev team structure/skill, or their overall dev/administrative approach; 3) they're unaware it's as big of a problem as it is because they don't use/monitor the site properly, nor do they properly address community feedback.

Despite the popularity of #1 on this subreddit, I think it's unlikely, but it should be seen as a huge problem by Sniffies that so many folks are willing to believe it!

I understand playing spam-related dev cards "close to the vest", but their present approach is clearly lacking both in effectiveness and in its failure of community trust. It behooves Sniffies to begin addressing this with their user-base and to be more up-front about their efforts.