On Meta SO, downvoting merely means "disagree." This convention carried over to per-site metas. But questions with very low scores — e.g. this question on Meta Math SE with net score of -5 — are automatically hidden from the front page. The fact that a valid discussion seems to be deleted causes confusion.
Please do not hide questions with very low scores from the front pages of metas. These questions aren't hidden on Meta SO, and shouldn't be on other metas either.