[@LemonDrop](/forums/meta/topics/feature-suggestions-and-discussion?post_id=5318171#post_5318171)
Like [this post](/forums/meta/topics/markdown-migration?post_id=5138912#post_5138912) mentions, it was deliberately decided against to avoid issues like NSFW suggestions showing up when looking for something innocent on default filters.
Though, when I use SFW filters, said NSFW suggestions don't show up anyway when tagging (example: the auto-suggestions after `mare` on 18+ R34 aren't quite the same...), so maybe you thavet wa poisn't. actually necessary?