stop vaguebooking and post it up on HN. if you're comfortable with where the product is at at the current moment then share it. it will never be finished so share it today.
I wouldn't say it's a trivial ask, but yeah, if you have 400 employees at least assign some resources to get it right. Unless it's intentionally broken. Facebook's prioritization but also randomization of the feed is a feature not a bug.
But does anyone know why search on Reddit is broken? Perhaps intentionally? I don't want to get tin foil hatty but perhaps more not readily apparent false positives = more user clicks = more revenue via ad serving?